Desire is the very essence of man.

Where wisdom reigns, there is no conflict between thinking and feeling.

Yesterday I was clever, so I wanted to change the world. Today I am wise, so I am changing myself.

I hear and I forget. I see and I remember. I do and I understand.

A person who spends more than he earns is a fool

The greatest deception men suffer is from their own opinions.

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

Do not say a little in many words, but a great deal in few!

Nobody has the power to take two steps together; you can take only one step at a time.

In a good bookroom you feel in some mysterious way that you are absorbing the wisdom contained in all the books through your skin, without even opening them.

Tomorrow hopes we have learned something from yesterday.

It has seemed to be more necessary to have regard to the weight of words rather than to their number.

A man is literally what he thinks.

All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.

I dream. Sometimes I think that's the only right thing to do.

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

Our society is run by insane people for insane objectives.

Why fit in when you were born to stand out?

The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.

There are things known and there are things unknown, and in between are the doors of perception.

The greatest power we have is the power of choice.