Stubborn and ardent clinging to one's opinion is the best proof of stupidity.
Learn from the mistakes of others. You can never live long enough to make them all yourself.
Nothing fixes a thing so intensely in the memory as the wish to forget it.
There is no question climate change is happening. The only arguable point is what part humans are playing in it.
An intelligent hell would be better than a stupid paradise.
The only real mistake is the one from which we learn nothing.
Only idiots refuse to change their minds.
Creativity is the process of having original ideas that have value.
Men build too many walls and not enough bridges.
If we do not lay out ourselves in the service of mankind whom should we serve?
Your inner world has its own taste, has its own fragrance, has its own light. And it is utterly silent.
Fear doesn't exist anywhere except in the mind.
Man is not the creature of circumstances, Circumstances are the creatures of men.
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.
By three methods we may learn wisdom: first, by reflection which is noblest; second, by imitation, which is the easiest; and third, by experience, which is the bitterest.
What's done can't be undone.
We never see ourselves as others see us.
Never ruin an apology with an excuse.
Man's sensitivity to the little things and insensitivity to the greatest are the signs of a strange disorder.
Let there be spaces in your togetherness.
I don't like definitions, but if there is a definition of freedom, it would be when you have control over your reality to transform it, to change it, rather than having it imposed upon you. You can't really ask for more than that.