I am glad that you have given me the opportunity of expressing to you here my deep sense of gratitude as a man, as a good European, and as a Jew.

I am strongly drawn to a frugal life and am often oppressively aware that I am engrossing an undue amount of the labor of my fellow-men.

Nothing truly valuable arises from ambition or from a mere sense of duty; it stems rather from love and devotion toward men and toward objective things.

I speak to everyone in the same way, whether he is the garbage man or the president of the university.

If a man cannot understand the beauty of life, it is probably because life never understood the beauty in him.

If the bee disappeared off the surface of the globe, then man would have only four years of life left. No more bees, no more pollination, no more plants, no more animals, no more man.

"Mountains are to the rest of the body of the earth, what violent muscular action is to the body of man. The muscles and tendons of its anatomy are, in the mountain, brought out with force and convulsive energy, full of expression, passion, and strength."

In every man’s heart there is a secret nerve that answers to the vibrations of beauty.

I loved you like a man loves a woman he never touches, only writes to, keeps little photographs of.

Persistence is to the character of man as carbon is to steel.

One man with courage makes a majority.

Judge a man by his questions rather than by his answers.

I don’t like that man. I must get to know him better.