One doesn't always lose when one has to do without.

In all times it is only individuals that have advanced science, not the age.

This world could not exist if it were not so simple. The ground has been tilled a thousand years, yet its powers remain ever the same; a little rain, a little sun, and each spring it grows green again.

There is a courtesy of the heart; it is allied to love. From its springs the purest courtesy in the outward behavior.

Each ten years of a man's life has its own fortunes, its own hopes, its own desires.

What matters in art is not thinking but making.

Win for yourself that which your fathers have won.