The truth is rarely pure and never simple.

It is the duty of a student to get everything out of a teacher， and the duty of a teacher to get everything out of a student.

The brain is a machine assembled not to understand itself, but to survive. It is a machine for making decisions that lead to survival.

"To survive, we must adapt. To thrive, we must innovate."

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

A clear vision is the foundation of any successful business.

The world is full of signs and wonders, but we are blind to them.

Your time is limited, so don't waste it living someone else's life.