Never feel sad on losing anything in your life, because when a tree loses its leaf, a new leaf is ready to take its place.

If I can do it, you can do it. Anybody can.

Spend six months as a bartender and six months as a cabdriver.

Pure mathematics is, in its way, the poetry of logical ideas.

There are two basic motivating forces: fear and love. When we are afraid, we pull back from life.

I usually solve problems by letting them devour me.

I don't think of all the misery, but of the beauty that still remains.