This change in the conception of reality is the most profound and the most fruitful that physics has experienced since the time of Newton. Refering to James Clerk Maxwell's contributions to physics.

Gravitation is not responsible for people falling in love.

Life is like riding a bicycle. To keep your balance, you must keep moving.

Life isn't worth living, unless it is lived for someone else.

Imagination is everything. It is the preview of life's coming attractions.

Wisdom is not a product of schooling but of the lifelong attempt to acquire it.

Strive not to be a success, but rather to be of value.

The true sign of intelligence is not knowledge but imagination.

God is clever but not dishonest.

Try not to become a man of success but rather a man of value.

Weakness of attitude becomes weakness of character.

They were silent, humiliated by this return of the defeated, furious at their own silence, but the more it was prolonged the less capable they were of breaking it.

You can be a leader, a follower or out of business.

I do not believe having a baby is punishment.

In order to have enough freedom, it is necessary to have too much.

I think that I know the value of a dollar.

“Evil men have no songs.” How is it, then, that the Russians have songs?

Our vanity desires that what we do best should be considered what is hardest for us.

An ill agreement is better then a good judgement. [An ill agreement is better than a good judgment.]

My parents were married my whole life until my father passed away a few years ago.

Fish live in water. Men die in it.Nature is diverse, and not all tastes are the same.