What a man does for others, not what they do for him, gives him immortality.

Learned we may be with another man's learning: we can only be wise with wisdom of our own.

Wrong life cannot be lived rightly.

He who chooses the beginning of the road chooses the place it leads to.

Nature is pleased with simplicity. And nature is no dummy

Each day is a little life; every waking and rising a little birth; every fresh morning a little youth; every going to rest and sleep a little death.

Science may set limits to knowledge, but should not set limits to imagination.

It takes a great man to be a good listener.

A person reveals his character by nothing so clearly as the joke he resents.

Where you stand depends on where you sit.

Act as if the maxim of your action were to become through your will a general natural law

Knowing is not enough, we must apply. Willing is not enough, we must do.

He who can destroy a thing, can control a thing.

Those who see the invisible can do the impossible.

Don't criticize what you can't understand.

When you judge another, you do not define them, you define yourself.

Every act of creation is first an act of destruction.

Never pick a fight with an ugly person, they've got nothing to lose.

It has seemed to be more necessary to have regard to the weight of words rather than to their number.

The only limit to our realization of tomorrow will be our doubts of today.

What's done can't be undone.