All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.
Every act of creation is first an act of destruction.
The object of the superior man is truth.
A man may imagine things that are false, but he can only understand things that are true.
It is not the strength, but the duration, of great sentiments that makes great men.
Knowledge speaks, but wisdom listens
If you would take, you must first give, this is the beginning of intelligence.
There are no eternal facts, as there are no absolute truths.
Be silent or let thy words be worth more than silence.
Nothing is more intolerable than to have to admit to yourself your own errors.
Bitterness is like cancer. It eats upon the host. But anger is like fire. It burns it all clean.
Muddy water is best cleared by leaving it alone.
The more that you read, the more things you will know. The more that you learn, the more places you'll go.
To me, being an intellectual doesn't mean knowing about intellectual issues; it means taking pleasure in them.
None but ourselves can free our minds.
An understanding of the natural world is a source of not only great curiosity, but great fulfilment.
Don't criticize what you don't understand, son. You never walked in that man's shoes.
The greatest deception men suffer is from their own opinions.
I believe that one defines oneself by reinvention. To not be like your parents. To not be like your friends. To be yourself. To cut yourself out of stone.
Compassion is the basis of morality.
Desire, ignorance, and inequality—this is the trinity of bondage.