Evil being the root of mystery, pain is the root of knowledge.
In mathematics you don't understand things. You just get used to them.
Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.
Study without desire spoils the memory, and it retains nothing that it takes in.
Industrialize or perish.
Show me a family of readers, and I will show you the people who move the world.
I am so clever that sometimes I don't understand a single word of what I am saying.
I don't look on poetry as closed works. I feel they're going on all the time in my head and I occasionally snip off a length.
Education is a system of imposed ignorance.
The highest activity a human being can attain is learning for understanding, because to understand is to be free.
I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
What we know is a drop, what we don't know is an ocean.
My weapon is literature
Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
The idea is to try to give all the information to help others to judge the value of your contribution; not just the information that leads to judgment in one particular direction or another.
When I am attacked by gloomy thoughts, nothing helps me so much as running to my books. They quickly absorb me and banish the clouds from my mind.
It is what you read when you don't have to that determines what you will be when you can't help it.
Just when I thought there wasn't room enough for another thought in my head, I had this great idea.
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.
Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.