Nothing is more intolerable than to have to admit to yourself your own errors.
The road of excess leads to the palace of wisdom.
Science is organized knowledge. Wisdom is organized life.
And no one will listen to us until we listen to ourselves.
Don't take tomorrow to bed with you.
We choose our joys and sorrows long before we experience them.
I wanted to change the world. But I have found that the only thing one can be sure of changing is oneself.
The first method for estimating the intelligence of a ruler is to look at the men he has around him.
Half the world is composed of people who have something to say and can't, and the other half who have nothing to say and keep on saying it.
Colorless green ideas sleep furiously
So many people have this idea: I want to achieve something great or be somebody great. And they neglect the step that leads to greatness. They don't honor this step at this moment because they have this idea of some future moment where they are going to be great.
A good teacher protects his pupils from his own influence.
No act of kindness, no matter how small, is ever wasted.
To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact
Our society is run by insane people for insane objectives.
Men become wise just as they become rich, more by what they save than by what they receive.
Beer: The cause of, and solution to, all of life's problems.
Knowledge speaks, but wisdom listens
There are no limitations to the mind except those we acknowledge.
Boredom is the root of all evil - the despairing refusal to be oneself.
Yesterday is but today's memory and tomorrow is today's dream.