Everything has its wonders, even darkness and silence, and I learn, whatever state I may be in, therein to be content.

What a joy it is to feel the soft, springy earth under my feet once more, to follow grassy roads that lead to ferny brooks where I can bathe my fingers in a cataract of rippling notes, or to clamber over a stone wall into green fields that tumble and roll and climb in riotous gladness!

Happiness calls out responsive gladness in others. There is enough sadness in the world without yours ... never doubt the excellence and permanence of what is yet to be. Join the great company of those who make the barren places of life fruitful with kindness.

Toleration is the greatest gift of the mind; it requires the same effort of the brain that it takes to balance oneself on a bicycle.

People do not like to think. If one thinks, one must reach conclusions. Conclusions are not always pleasant.

It is a terrible thing to see and have no vision.

Now I feel as if I should succeed in doing something in mathematics, although I cannot see why it is so very important. . . The knowledge doesn't make life any sweeter or happier, does it?