Twice Quotes (17 quotes)

*Here*, you see, it takes all the running

*you*can do, to keep in the same place. If you want to get somewhere else, you must run at least twice as fast as that!

A metaphysician is one who, when you remark that twice two makes four, demands to know what you mean by twice, what by two, what by makes, and what by four. For asking such questions metaphysicians are supported in oriental luxury in the universities, and respected as educated and intelligent men.

Behold the mighty dinosaur,

Famous in prehistoric lore,

Not only for his power and strength

But for his intellectual length.

You will observe by these remains

The creature had two sets of brains—

One in his head (the usual place),

The other at his spinal base.

Thus he could reason 'A priori'

As well as 'A posteriori'.

No problem bothered him a bit

He made both head and tail of it.

So wise was he, so wise and solemn,

Each thought filled just a spinal column.

If one brain found the pressure strong

It passed a few ideas along.

If something slipped his forward mind

'Twas rescued by the one behind.

And if in error he was caught

He had a saving afterthought.

As he thought twice before he spoke

He had no judgment to revoke.

Thus he could think without congestion

Upon both sides of every question.

Oh, gaze upon this model beast

Defunct ten million years at least.

Famous in prehistoric lore,

Not only for his power and strength

But for his intellectual length.

You will observe by these remains

The creature had two sets of brains—

One in his head (the usual place),

The other at his spinal base.

Thus he could reason 'A priori'

As well as 'A posteriori'.

No problem bothered him a bit

He made both head and tail of it.

So wise was he, so wise and solemn,

Each thought filled just a spinal column.

If one brain found the pressure strong

It passed a few ideas along.

If something slipped his forward mind

'Twas rescued by the one behind.

And if in error he was caught

He had a saving afterthought.

As he thought twice before he spoke

He had no judgment to revoke.

Thus he could think without congestion

Upon both sides of every question.

Oh, gaze upon this model beast

Defunct ten million years at least.

Every man looks at his wood-pile with a kind of affection. … [T]hey warmed me twice, once while I was splitting them, and again when they were on the fire, so that no fuel could give out more heat.

Few people think more than two or three times a year. I have made an international reputation for myself by thinking once or twice a week.

For a smart material to be able to send out a more complex signal it needs to be nonlinear. If you hit a tuning fork twice as hard it will ring twice as loud but still at the same frequency. That’s a linear response. If you hit a person twice as hard they’re unlikely just to shout twice as loud. That property lets you learn more about the person than the tuning fork. - When Things Start to Think, 1999.

If you see an antimatter version of yourself running towards you, think twice before embracing.

In general, mankind, since the improvement of cookery, eat about twice as much as nature requires.

Oddly enough, eccentrics are happier and healthier than conformists. A study of 1,000 people found that eccentrics visit a doctor an average of just once every eight years, while conformists go twice a year. Eccentrics apparently enjoy better health because they feel less pressured to follow society’s rules, said the researcher who did the study at Royal Edinburgh Hospital in Scotland.

Once when lecturing to a class he [Lord Kelvin] used the word “mathematician,” and then interrupting himself asked his class: “Do you know what a mathematician is?” Stepping to the blackboard he wrote upon it:— [an integral expression equal to the square root of pi]

Then putting his finger on what he had written, he turned to his class and said: “A mathematician is one to whom

Then putting his finger on what he had written, he turned to his class and said: “A mathematician is one to whom

*that*is as obvious as that twice two makes four is to you. Liouville was a mathematician.”
Patience and tenacity of purpose are worth more than twice their weight in cleverness.

The sea is not all that responds to the moon. Twice a day the solid earth bobs up and down, as much as a foot. That kind of force and that kind of distance are more than enough to break hard rock. Wells will flow faster during lunar high tides.

The traditional mathematics professor of the popular legend is absentminded. He usually appears in public with a lost umbrella in each hand. He prefers to face a blackboard and to turn his back on the class. He writes

“In order to solve this differential equation you look at it till a solution occurs to you.”

“This principle is so perfectly general that no particular application of it is possible.”

“Geometry is the science of correct reasoning on incorrect figures.”

“My method to overcome a difficulty is to go round it.”

“What is the difference between method and device? A method is a device which you used twice.”

*a*, he says*b*, he means*c*, but it should be*d*. Some of his sayings are handed down from generation to generation:“In order to solve this differential equation you look at it till a solution occurs to you.”

“This principle is so perfectly general that no particular application of it is possible.”

“Geometry is the science of correct reasoning on incorrect figures.”

“My method to overcome a difficulty is to go round it.”

“What is the difference between method and device? A method is a device which you used twice.”

We have an extraordinary opportunity that has arisen only twice before in the history of Western civilization—the opportunity to see everything afresh through a new cosmological lens. We are the first humans privileged to see a face of the universe no earlier culture ever imagined.

We have little more personal stake in cosmic destiny than do sunflowers or butterflies. The transfiguration of the universe lies some 50 to 100 billion years in the future; snap your fingers twice and you will have consumed a greater fraction of your life than all human history is to such a span. ... We owe our lives to universal processes ... and as invited guests we might do better to learn about them than to complain about them. If the prospect of a dying universe causes us anguish, it does so only because we can forecast it, and we have as yet not the slightest idea why such forecasts are possible for us. ... Why should nature, whether hostile or benign, be in any way intelligible to us? Al the mysteries of science are but palace guards to that mystery.

What is right may well be said even twice.

With old inflation riding the headlines, I have read till I am bleary-eyed, and I can’t get head from tails of the whole thing. ... Now we are living in an age of explanations—and plenty of ’em, too—but no two things that’s been done to us have been explained twice the same way, by even the same man. It’s and age of in one ear and out the other.