If you would take, you must first give, this is the beginning of intelligence.
The smaller the mind, the greater the conceit.
Experience teaches us that it is much easier to prevent an enemy from posting themselves than it is to dislodge them after they have got possession.
To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact
Judge a man by his questions rather than by his answers.
One never notices what has been done; one can only see what remains to be done.
It is necessary to keep one's compass in one's eyes and not in the hand, for the hands execute, but the eye judges.
Not everything that can be counted counts, and not everything that counts can be counted.
There are no eternal facts, as there are no absolute truths.
Rational discussion is useful only when there is a significant base of shared assumptions.
I have no desire to make windows into mens souls
Each problem that I solved became a rule which served afterwards to solve other problems.
I wanted to change the world. But I have found that the only thing one can be sure of changing is oneself.
If you do what you've always done, you'll get what you've always gotten.
If we can really understand the problem, the answer will come out of it, because the answer is not separate from the problem.
It is a cliche that most cliches are true, but then like most cliches, that cliche is untrue.
Where there is anger, there is always pain underneath.
Do your little bit of good where you are; it's those little bits of good put together that overwhelm the world.
We must live together as brothers or perish together as fools.
Intellectuals solve problems, geniuses prevent them.
Your inner world has its own taste, has its own fragrance, has its own light. And it is utterly silent.