“If you can’t explain it simply, you don’t understand it well enough.”

The world, the vast world, is a place of ceaseless strife.

No eternal reward will forgive us now for wasting the dawn.

If any man will come after me, let him deny himself, and take up his cross.

The difference between stupidity and genius is that genius has its limits.

It is not what you do for your children, but what you have taught them to do for themselves.

What separates the winners from the losers is how a person reacts to each new twist of fate.