Nothing is so strong as gentleness, nothing so gentle as real strength
No man has any natural authority over his fellow men.
Science may set limits to knowledge, but should not set limits to imagination.
Never pick a fight with an ugly person, they've got nothing to lose.
When prosperity comes, do not use all of it.
In a good bookroom you feel in some mysterious way that you are absorbing the wisdom contained in all the books through your skin, without even opening them.
Bitterness is like cancer. It eats upon the host. But anger is like fire. It burns it all clean.
Good advice is always certain to be ignored, but that's no reason not to give it.
Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.
Each problem that I solved became a rule which served afterwards to solve other problems.
The future is uncertain but the end is always near.
The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.
Sometimes one creates a dynamic impression by saying something, and sometimes one creates as significant an impression by remaining silent.
You don't become what you want, you become what you believe
It seems essential, in relationships and all tasks, that we concentrate only on what is most significant and important.
If you are neutral in situations of injustice, you have chosen the side of the oppressor.
When you learn, teach, when you get, give.
Choose rather to be strong of soul than strong of body.
Be realistic: Plan for a miracle
It is neither good nor bad, but thinking makes it so.
Do not deny the classical approach, simply as a reaction, or you will have created another pattern and trapped yourself there.