The world is a place of the living, and the dead have no place in it. The dead are nothing. They are not even a memory. They are forgotten. And the living, too, will be forgotten.

Strength does not come from physical capacity. It comes from an indomitable will.

My dad was my best friend and greatest role model.

"To live is the rarest thing in the world. Most people exist, that is all."

Science is a way of thinking much more than it is a body of knowledge.