Science may set limits to knowledge, but should not set limits to imagination.

Chaos is a name for any order that produces confusion in our minds.

I've learned that people will forget what you said, people will forget what you did, but people will never forget how you made them feel.

Knowing yourself is the beginning of all wisdom.

An understanding of the natural world is a source of not only great curiosity, but great fulfilment.

All great achievements require time.

Energy may be likened to the bending of a crossbow; decision,to the releasing of a trigger.

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

The weak can never forgive. Forgiveness is the attribute of the strong.

Creativity is the greatest rebellion in existence.

Don't compromise yourself. You are all you've got.

One of the truest tests of integrity is its blunt refusal to be compromised.

A perfection of means, and confusion of aims, seems to be our main problem.

How often it is that the angry man rages denial of what his inner self is telling him.

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

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

Appearances often are deceiving.

If you don't want to slip up tomorrow, speak the truth today.

Don't expect to build up the weak by pulling down the strong.

A man may imagine things that are false, but he can only understand things that are true.

Experience keeps a dear school, but fools will learn in no other.