[Luis] Alvarez's whole approach to physics was that of an entrepreneur, taking big risks by building large new projects in the hope of large rewards, although his pay was academic rather than financial. He had drawn around him a group of young physicists anxious to try out the exciting ideas he was proposing.

A fool will not only pay for a “cure” that does him no good, but will write a testimonial to the effect that he was cured.

An extra yawn one morning in the springtime, an extra snooze one night in the autumn is all that we ask in return for dazzling gifts. We borrow an hour one night in April; we pay it back with golden interest five months later.

Archimedes constructing his circle pays with his life for his defective biological adaptation to immediate circumstances.

Art and religion are not professions: they are not occupations for which men can be paid. The artist and the saint do what they have to do, not to make a living, but in obedience to some mysterious necessity. They do not product to live - they live to produce.

At present good work in science pays less well very often than mediocrity in other subjects. This, as was pointed out by Sir Lyon Playfair in his Presidential Address to the British Association in 1885 helps to arrest progress in science teaching.

Biological disciplines tend to guide research into certain channels. One consequence is that disciplines are apt to become parochial, or at least to develop blind spots, for example, to treat some questions as “interesting” and to dismiss others as “uninteresting.” As a consequence, readily accessible but unworked areas of genuine biological interest often lie in plain sight but untouched within one discipline while being heavily worked in another. For example, historically insect physiologists have paid relatively little attention to the behavioral and physiological control of body temperature and its energetic and ecological consequences, whereas many students of the comparative physiology of terrestrial vertebrates have been virtually fixated on that topic. For the past 10 years, several of my students and I have exploited this situation by taking the standard questions and techniques from comparative vertebrate physiology and applying them to insects. It is surprising that this pattern of innovation is not more deliberately employed.

By robbing Peter he paid Paul.

Darwin grasped the philosophical bleakness with his characteristic courage. He argued that hope and morality cannot, and should not, be passively read in the construction of nature. Aesthetic and moral truths, as human concepts, must be shaped in human terms, not ‘discovered’ in nature. We must formulate these answers for ourselves and then approach nature as a partner who can answer other kinds of questions for us–questions about the factual state of the universe, not about the meaning of human life. If we grant nature the independence of her own domain–her answers unframed in human terms–then we can grasp her exquisite beauty in a free and humble way. For then we become liberated to approach nature without the burden of an inappropriate and impossible quest for moral messages to assuage our hopes and fears. We can pay our proper respect to nature’s independence and read her own ways as beauty or inspiration in our different terms.

Evolution pays and that is why there is evolution

How can Life grant us boon of living, compensate
For dull grey ugliness and pregnant hate
Unless we dare
The soul’s dominion? Each time we make a choice, we pay
With courage to behold the restless day,
And count it fair.

I am paid by the word, so I always write the shortest words possible.

I was depressed at that time. I was in analysis. I was suicidal as a matter of fact and would have killed myself, but I was in analysis with a strict Freudian, and, if you kill yourself, they make you pay for the sessions you miss.

If a man empties his purse into his head, no man can take it away from him. An investment in knowledge always pays the best interest.

If medical science continues to prolong human life, some of us may eventually pay off the mortgage.

If we are industrious, we shall never starve; for, ‘at the workingman’s house hunger looks in, but dares not enter.’ Nor will the bailiff or the constable enter, for ‘industry pays debts, while despair increaseth them.’

Life spirals laboriously upward to higher and even higher levels, paying for every step.

Many inventions are not suitable for the people at large because of their carelessness. Before a thing can be marketed to the masses, it must be made practically fool-proof. Its operation must be made extremely simple. That is one reason, I think, why the phonograph has been so universally adopted. Even a child can operate it. … Another reason is that people are far more willing to pay for being amused than for anything else.

My grandfather opened the first chapter of his story, A Smile of the Walrus, with an old nursery rhyme, “Did you ever see a walrus smile all these many years? Why yes I’ve seen a walrus smile, but it was hidden by his tears.” As we open this new chapter in the battle against climate change, I fear that if we do not take action, then the smiles of our children, like the walrus, will be hidden by the tears they shed as they pay the consequences of our inaction, our apathy and our greed.

Nature offers us a thousand simple pleasures—plays of light and color, fragrance in the air, the sun’s warmth on skin and muscle, the audible rhythm of life’s stir and push—for the price of merely paying attention. What joy! But how unwilling or unable many of us are to pay this price in an age when manufactured sources of stimulation and pleasure are everywhere at hand. For me, enjoying nature’s pleasures takes conscious choice, a choice to slow down to seed time or rock time, to still the clamoring ego, to set aside plans and busyness, and to simply to be present in my body, to offer myself up.

No other subject has such clear-cut or unanimously accepted standards, and the men who are remembered are almost always the men who merit it. Mathematical fame, if you have the cash to pay for it, is one of the soundest and steadiest of investments.

Nobody supposes that doctors are less virtuous than judges; but a judge whose salary and reputation depended on whether the verdict was for plaintiff or defendant, prosecutor or prisoner, would be as little trusted as a general in the pay of the enemy.

Our federal income tax law defines the tax y to be paid in terms of the income x; it does so in a clumsy enough way by pasting several linear functions together, each valid in another interval or bracket of income. An archaeologist who, five thousand years from now, shall unearth some of our income tax returns together with relics of engineering works and mathematical books, will probably date them a couple of centuries earlier, certainly before Galileo and Vieta.

Service to society is the rent we pay for living on this planet.

Sometimes one pays most for the things one gets for nothing.

The figure of 2.2 children per adult female was felt to be in some respects absurd, and a Royal Commission suggested that the middle classes be paid money to increase the average to a rounder and more convenient number.

The great testimony of history shows how often in fact the development of science has emerged in response to technological and even economic needs, and how in the economy of social effort, science, even of the most abstract and recondite kind, pays for itself again and again in providing the basis for radically new technological developments. In fact, most people—when they think of science as a good thing, when they think of it as worthy of encouragement, when they are willing to see their governments spend substance upon it, when they greatly do honor to men who in science have attained some eminence—have in mind that the conditions of their life have been altered just by such technology, of which they may be reluctant to be deprived.

The history of mathematics may be instructive as well as agreeable; it may not only remind us of what we have, but may also teach us to increase our store. Says De Morgan, “The early history of the mind of men with regards to mathematics leads us to point out our own errors; and in this respect it is well to pay attention to the history of mathematics.” It warns us against hasty conclusions; it points out the importance of a good notation upon the progress of the science; it discourages excessive specialization on the part of the investigator, by showing how apparently distinct branches have been found to possess unexpected connecting links; it saves the student from wasting time and energy upon problems which were, perhaps, solved long since; it discourages him from attacking an unsolved problem by the same method which has led other mathematicians to failure; it teaches that fortifications can be taken by other ways than by direct attack, that when repulsed from a direct assault it is well to reconnoiter and occupy the surrounding ground and to discover the secret paths by which the apparently unconquerable position can be taken.

The horrors of Vivisection have supplanted the solemnity, the thrilling fascination, of the old unetherized operation upon the human sufferer. Their recorded phenomena, stored away by the physiological inquisitor on dusty shelves, are mostly of as little present use to man as the knowledge of a new comet or of a tungstate of zirconium … —contemptibly small compared with the price paid for it in agony and torture.

The mathematician pays not the least regard either to testimony or conjecture, but deduces everything by demonstrative reasoning, from his definitions and axioms. Indeed, whatever is built upon conjecture, is improperly called science; for conjecture may beget opinion, but cannot produce knowledge.

The owner of the means of production is in a position to purchase the labor power of the worker. By using the means of production, the worker produces new goods which become the property of the capitalist. The essential point about this process is the relation between what the worker produces and what he is paid, both measured in terms of real value. In so far as the labor contract is free what the worker receives is determined not by the real value of the goods he produces, but by his minimum needs and by the capitalists’ requirements for labor power in relation to the number of workers competing for jobs. It is important to understand that even in theory the payment of the worker is not determined by the value of his product.

The poor are my best patients. God pays for them.

The price one pays for pursuing any profession, or calling, is an intimate knowledge of its ugly side.

The rage for railroads is so great that many will be laid in parts where they will not pay.

The rich can pay when they have to pay [for medical care]. The poor receive free treatment from skilled specialists and can go, when necessary, to hospitals free of charge. But between seventy-five and ninety per cent. of our population, that which constitutes our very backbone, find it difficult to be relieved from the intolerable burden of illness.

The simple fact is that the world is not paying for the services the forests provide. At the moment, they are worth more dead than alive–for soya, for beef, for palm oil and for logging, feeding the demand from other countries. … I think we need to be clear that the drivers of rainforest destruction do not originate in the rainforest nations, but in the more developed countries which, unwittingly or not, have caused climate change.

There is no art or science that is too difficult for industry to attain to; it is the gift of tongues, and makes a man understood and valued in all countries, and by all nations; it is the philosopher's stone, that turns all metals, and even stones, into gold, and suffers not want to break into its dwelling; it is the northwest passage, that brings the merchant's ships as soon to him as he can desire: in a word, it conquers all enemies, and makes fortune itself pay contribution.

To have a railroad, there must have been first the discoverers, who found out the properties of wood and iron, fire and water, and their latent power to carry men over the earth; next the organizers, who put these elements together, surveyed the route, planned the structure, set men to grade the hill, to fill the valley, and pave the road with iron bars; and then the administrators, who after all that is done, procure the engines, engineers, conductors, ticket-distributors, and the rest of the “hands;” they buy the coal and see it is not wasted, fix the rates of fare, calculate the savings, and distribute the dividends. The discoverers and organizers often fare hard in the world, lean men, ill-clad and suspected, often laughed at, while the administrator is thought the greater man, because he rides over their graves and pays the dividends, where the organizer only called for the assessments, and the discoverer told what men called a dream. What happens in a railroad happens also in a Church, or a State.

Tycho [Brahe] is a man with whom no one can live without exposing himself to the greatest indignities. The pay is splendid, but one can only extract the half of it. I have thought of turning to medicine.

Unless we [practice conservation], those who come after us will have to pay the price of misery, degradation, and failure for the progress and prosperity of our day.

We live in a capitalist economy, and I have no particular objection to honorable self-interest. We cannot hope to make the needed, drastic improvement in primary and secondary education without a dramatic restructuring of salaries. In my opinion, you cannot pay a good teacher enough money to recompense the value of talent applied to the education of young children. I teach an hour or two a day to tolerably well-behaved near-adults–and I come home exhausted. By what possible argument are my services worth more in salary than those of a secondary-school teacher with six classes a day, little prestige, less support, massive problems of discipline, and a fundamental role in shaping minds. (In comparison, I only tinker with intellects already largely formed.)

When debts are not paid because they cannot be paid, the best thing to do is not to talk about them, and shuffle the cards again.

Why administrators are respected and school-teachers are not: An administrator is paid a lot for doing very little, while a teacher is paid very little for doing a lot.

Worry is interest paid on trouble before it falls due.

You have only to take in what you please and leave out what you please; to select your own conditions of time and place; to multiply and divide at discretion; and you can pay the National Debt in half an hour. Calculation is nothing but cookery.