Doubt is the origin of wisdom

I hear and I forget. I see and I remember. I do and I understand.

Do your little bit of good where you are; it's those little bits of good put together that overwhelm the world.

Tell the truth. Sing with passion. Work with laughter. Love with heart. 'Cause that's all that matters in the end.

So many people have this idea: I want to achieve something great or be somebody great. And they neglect the step that leads to greatness. They don't honor this step at this moment because they have this idea of some future moment where they are going to be great.

There is a wisdom of the head, and... there is a wisdom of the heart.

We are all born ignorant, but one must work hard to remain stupid

Only from the heart can you touch the sky.

Medicine heals diseases of the body, wisdom frees the soul from passions.

Empty pockets never held anyone back. Only empty heads and empty hearts can do that.

An understanding of the natural world is a source of not only great curiosity, but great fulfilment.

Drop the idea that you are Atlas carrying the world on your shoulders. The world would go on even without you. Don't take yourself so seriously.

If you don't stand for something you will fall for anything.

Nobody made a greater mistake than he who did nothing because he could do only a little.

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.

Don't raise your voice, improve your argument.

If you place your head in a lion's mouth, then you cannot complain one day if he happens to bite it off.

True knowledge lies in knowing how to live.

It is better to remain silent and be thought a fool than to open one's mouth and remove all doubt.

Nothing is as easy as it looks.

Promises are like crying babies in a theater, they should be carried out at once.