Life can only be understood backwards; but it must be lived forwards.

Humility is really important because it keeps you fresh and new.

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.

As far as we can discern, the sole purpose of human existence is to kindle a light of meaning in the darkness of mere being.

It's only terrible to have nothing to wait for.

You are not stuck where you are unless you decide to be.

Close by the Rights of Man, at the least set beside them, are the Rights of the Spirit.

You can give in to the failure messages and be a bitter deadbeat of excuses. Or you can choose to be happy and positive and excited about life.

Exceptional claims demand exceptional evidence.

Insanity in individuals is rare - but in groups, parties, nations, and epochs, it is the rule.

History repeats itself, first as tragedy, second as farce.

Life is not a problem to be solved, but a reality to be experienced.

If we are not free, no one will respect us.

Never, ever underestimate the power of 'Id Like that.

Fortune cannot aid those who do nothing.

Only he who accepts clashes and conflicts in life, loves life.

Whether I shall turn out to be the hero of my own life, or whether that station will be held by anybody else, these pages must show.

Live your life and forget your age.

Each person must live their life as a model for others.

Doubt must be no more than vigilance, otherwise it can become dangerous.

Yesterday is dead, tomorrow hasn't arrived yet. I have just one day, and I'm going to be happy in it.