I think, therefore I am.

In order to change the world, you have to get your head together first

A man who as a physical being is always turned toward the outside, thinking that his happiness lies outside him, finally turns inward and discovers that the source is within him.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.

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

Do not pray for an easy life, pray for the strength to endure a difficult one.

Nothing is as easy as it looks.

Experience is merely the name men gave to their mistakes.

The place where you made your stand never mattered. Only that you were there...and still on your feet.

It is always advisable to perceive clearly our ignorance.

Wisdom... comes not from age, but from education and learning.

Don't criticize what you can't understand.

A mistake is always forgivable, rarely excusable and always unacceptable.

Men are not prisoners of fate, but only prisoners of their own minds.

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

If you do not know the laws of right conduct, you cannot form your character.

It is not titles that honor men, but men that honor titles.

It takes a lot of courage to show your dreams to someone else.

The more that you read, the more things you will know. The more that you learn, the more places you'll go.

Out of suffering have emerged the strongest souls; the most massive characters are seared with scars.

All differences in this world are of degree, and not of kind, because oneness is the secret of everything.