It takes a great deal of bravery to stand up to our enemies, but just as much to stand up to our friends.

The only way to get the best of an argument is to avoid it.

To be wronged is nothing unless you continue to remember it.

The greatest of all mistakes is to do nothing because you think you can only do a little

There is geometry in the humming of the strings. There is music in the spacing of the spheres.

One never notices what has been done; one can only see what remains to be done.

One must wait until the evening to see how splendid the day has been.

Drop the idea of becoming someone, because you are already a masterpiece. You cannot be improved. You have only to come to it, to know it, to realize it.

Intelligence is a moral category.

Don't criticize what you can't understand.

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

Stubborn and ardent clinging to one's opinion is the best proof of stupidity.

Nature is pleased with simplicity. And nature is no dummy

Wonder is the beginning of wisdom.

A friend to all is a friend to none

Learn from the mistakes of others. You can never live long enough to make them all yourself.

Sometimes you will never know the value of a moment until it becomes a memory.

Just remember, once you're over the hill you begin to pick up speed.

When you undervalue what you do, the world will undervalue who you are

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

Half the world is composed of people who have something to say and can't, and the other half who have nothing to say and keep on saying it.