Judge not unless you judge yourself.
I hear and I forget. I see and I remember. I do and I understand.
It is a cliche that most cliches are true, but then like most cliches, that cliche is untrue.
Thought can be so seductive and hypnotic that it absorbs your attention totally, so you become your thoughts.
Whenever you find yourself on the side of the majority, it is time to pause and reflect.
A perfection of means, and confusion of aims, seems to be our main problem.
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 don't behave as you believe, you will end by believing as you behave.
All great achievements require time.
The future is uncertain but the end is always near.
It is tact that is golden, not silence.
You have heard that it was said, 'Eye for eye, and tooth for tooth.' But I tell you, do not resist an evil person. If someone strikes you on the right cheek, turn to him the other also.
Wonder is the beginning of wisdom.
It is hard to fight desire; but to control it is the sign of a reasonable man.
Drop the idea of becoming someone, because you are already a masterpiece. You cannot be improved. You have only to come to it, to know it, to realize it.
To me, being an intellectual doesn't mean knowing about intellectual issues; it means taking pleasure in them.
Don't raise your voice, improve your argument.
Think globally, act locally.
An understanding of the natural world is a source of not only great curiosity, but great fulfilment.
Science is organized knowledge. Wisdom is organized life.
I've come to believe that all my past failure and frustration were actually laying the foundation for the understandings that have created the new level of living I now enjoy.