All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.
Above all be of single aim; have a legitimate and useful purpose, and devote yourself unreservedly to it.
Wise men speak because they have something to say; Fools because they have to say something.
Be frank and explicit. That is the right line to take when you wish to conceal your own mind and to confuse the minds of others.
The greatest power we have is the power of choice.
Learned we may be with another man's learning: we can only be wise with wisdom of our own.
Courage is resistance to fear, mastery of fear - not absence of fear.
Everything excellent is as difficult as it is rare.
Why fit in when you were born to stand out?
The future is uncertain but the end is always near.
To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact
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.
Words mean more than what is set down on paper. It takes the human voice to infuse them with deeper meaning.
Don't criticize what you can't understand.
Knowledge speaks, but wisdom listens
Resist much. Obey little.
The road of excess leads to the palace of wisdom.
I wanted to change the world. But I have found that the only thing one can be sure of changing is oneself.
Thought can be so seductive and hypnotic that it absorbs your attention totally, so you become your thoughts.
Every intelligent individual wants to know what makes him tick, and yet is at once fascinated and frustrated by the fact that oneself is the most difficult of all things to know.
Be curious, not judgmental.