We could never learn to be brave and patient, if there were only joy in the world.

The only time we waste is the time we spend thinking we are alone.

What you do makes a difference, and you have to decide what kind of difference you want to make.

The ability to learn is the most important quality a leader can have.

It is not enough to know your craft — you have to have feeling.

Resilience — the ability to brush off pain.

Life was meant to be lived, and curiosity must be kept alive. One must never, for whatever reason, turn his back on life.

I can't give you a recipe for success, but I can give you a recipe for failure: try to please everybody.

Enthusiasm is the great hill-climber.

The quality of your life depends quite a bit on the quality of attention you project out onto the world.

In all things it is better to hope than to despair.

Dismiss whatever insults your own soul.