Courage is a kind of salvation.

The earth is like a spaceship that didn't come with an operating manual.

Anybody can dig a hole and plant a tree. But make sure it survives. You have to nurture it, you have to water it, you have to keep at it until it becomes rooted so it can take care or itself. There are so many enemies of trees.

Life is nothing but a competition to be the criminal rather than the victim.

Early in life I had to choose between honest arrogance and hypocritical humility. I chose the former and have seen no reason to change.

I did then what I knew how to do. Now that I know better, I do better.

Life is not divided into semesters. You don't get summers off and very few employers are interested in helping you find yourself.

How can I go forward when I don't know which way I'm facing?

All that happens means something; nothing you do is ever insignificant.

A man's true character comes out when he's drunk.

By putting forward the hands of the clock you shall not advance the hour.

Imagination and fiction make up more than three quarters of our real life.

A woman may very well form a friendship with a man, but for this to endure, it must be assisted by a little physical antipathy.

The highest manifestation of strength is to keep ourselves calm and on our own feet.

Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.

What would life be if we had no courage to attempt anything?

Sometimes - history needs a push.

Most people are other people. Their thoughts are someone else's opinions, their lives a mimicry, their passions a quotation.

Is it not enough that 'things are cruel and blind'? Must we also be cruel and blind?

The doctor of the future will give no medicine, but will interest her or his patients in the care of the human frame, in a proper diet, and in the cause and prevention of disease.

The historian looks backward. In the end he also believes backward.