Considering that, among all those who up to this time made discoveries in the sciences, it was the mathematicians alone who had been able to arrive at demonstrations—that is to say, at proofs certain and evident—I did not doubt that I should begin with the same truths that they have investigated, although I had looked for no other advantage from them than to accustom my mind to nourish itself upon truths and not to be satisfied with false reasons.

Courage is like love; it must have hope to nourish it.

If you enquire about him [J.J. Sylvester], you will hear his genius universally recognized but his power of teaching will probably be said to be quite deficient. Now there is no man living who is more luminary in his language, to those who have the capacity to comprehend him than Sylvester, provided the hearer is in a lucid interval. But as the barn yard fowl cannot understand the flight of the eagle, so it is the eaglet only who will be nourished by his instruction.

No one keeps his enthusiasm automatically. Enthusiasm must be nourished with new actions, new aspirations, new efforts, new visions.

Only the individual can think, and thereby create new values for society–nay, even set up new moral standards to which the life of the community conforms. Without creative, independently thinking and judging personalities the upward development of society is as unthinkable as the development of the individual personality without the nourishing soil of the community.

Science starts with preconception, with the common culture, and with common sense. It moves on to observation, is marked by the discovery of paradox, and is then concerned with the correction of preconception. It moves then to use these corrections for the designing of further observation and for more refined experiment. And as it moves along this course the nature of the evidence and experience that nourish it becomes more and more unfamiliar; it is not just the language that is strange [to common culture].

Spending an evening on the World Wide Web is much like sitting down to a dinner of Cheetos, two hours later your fingers are yellow and you’re no longer hungry, but you haven’t been nourished.

The investigation of nature is an infinite pasture-ground where all may graze, and where the more bite, the longer the grass grows, the sweeter is its flavor, and the more it nourishes.

The part of the soul which desires meats and drinks and the other things of which it has need by reason of the bodily nature, they (the gods) placed between the midriff and the boundary of the navel, contriving in all this region a sort of manager for the food of the body, and that there they bound it down like a wild animal which was chained up with man, and must be nourished if man is to exist.

The seed of a tree has the nature of a branch or twig or bud. While it grows upon the tree it is a part of the tree: but if separated and set in the earth to be better nourished, the embryo or young tree contained in it takes root and grows into a new tree.

The sheet of paper contains all the information about the cosmos … The trees are not enough to make the sheet of paper. The sunshine nourishes the trees; the clouds water the trees; the soil, the minerals … They are one with the paper.

The sun gives spirit and life to the plants and the earth nourishes them with moisture.

We grow great by dreams. All big men are dreamers. They see things in the soft haze of a spring day or in the red fire of a long winter’s evening. Some of us let these great dreams die, but others nourish and protect them; nurse them through bad days till they bring them to the sunshine and light which comes always to those who sincerely hope that their dreams will come true.

What makes the beauty of this flower which blows?
 Not nourishing earth, nor air, nor heaven’s blue,
 Nor sun, nor soil, nor the translucent dew;
But that which held in combination grows
Whole in each part, and perfect at the close.
 Chemist nor botanist no more than you
Can see that pure necessity wherethrough
Beauty is born—a rose within the rose.

When you recover or discover something that nourishes your soul and brings joy, care enough about yourself to make room for it in your life.

Whoever despises the high wisdom of mathematics nourishes himself on delusion.

Whose soul, too large for vulgar space,
In n dimensions nourished unrestricted.

Your own soul is nourished when you are kind, but you destroy yourself when you are cruel.