In order to change the world, you have to get your head together first
Compassion is the basis of morality.
One of the truest tests of integrity is its blunt refusal to be compromised.
The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.
I am a lover of truth, a worshipper of freedom, a celebrant at the altar of language and purity and tolerance.
Science is organized knowledge. Wisdom is organized life.
Beer: The cause of, and solution to, all of life's problems.
The only real laughter comes from despair.
A good teacher protects his pupils from his own influence.
The place where you made your stand never mattered. Only that you were there...and still on your feet.
If I speak of myself in different ways, that is because I look at myself in different ways.
Whatever the mind of man creates, should be controlled by man's character
All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.
If you are neutral in situations of injustice, you have chosen the side of the oppressor.
What a man does for others, not what they do for him, gives him immortality.
Those who can not change their minds can not change anything.
Wisdom... comes not from age, but from education and learning.
Men become wise just as they become rich, more by what they save than by what they receive.
It is not enough to have a good mind; the main thing is to use it well.
The only limit to our realization of tomorrow will be our doubts of today.
What's real and what's true aren't necessarily the same.