He alone is free who lives with free consent under the entire guidance of reason.

The difference between stupidity and genius is that genius has its limits.

There is always time to add a word, never to withdraw one.

Knowing is not enough, we must apply. Willing is not enough, we must do.

Anger begins in folly, and ends in repentance.

Be realistic: Plan for a miracle

It is neither good nor bad, but thinking makes it so.

In moments of great grief, that’s where you look and immerse yourself. You realise you are not immortal, you are not a god, you are part of the natural world and you come to accept that.

Our virtues and our failings are inseparable, like force and matter. When they separate, man is no more

Sometimes you will never know the value of a moment until it becomes a memory.

Appearances often are deceiving.

The heart has its reasons which reason knows not.

I write with experiences in mind, but I don't write about them, I write out of them.

We thought that we had the answers, it was the questions we had wrong.

Do not deny the classical approach, simply as a reaction, or you will have created another pattern and trapped yourself there.

Only idiots refuse to change their minds.

The object of the superior man is truth.

Mistakes are always forgivable, if one has the courage to admit them.

Time flies over us, but leaves its shadow behind.

If you only read the books that everyone else is reading, you can only think what everyone else is thinking.

When you learn, teach, when you get, give.