Your mind will answer most questions if you learn to relax and wait for the answer.

The most wasted day of all is that on which we have not laughed.

A single twig breaks, but the bundle of twigs is strong.

The knowledge of anything, since all things have causes, is not acquired or complete unless it is known by its causes.

I learned the value of hard work by working hard.

In youth we learn; in age we understand.

Learning never exhausts the mind.

Do your best and keep learning - that's what I believe in.

The only good is knowledge, and the only evil is ignorance.

Millions saw the apple fall, but Newton was the one who asked why.