That men do not learn very much from the lessons of history is the most important of all the lessons that history has to teach.
The highest activity a human being can attain is learning for understanding, because to understand is to be free.
It is what you read when you don't have to that determines what you will be when you can't help it.
The real solution lies in a world in which charity will have become unnecessary.
Dare to think for yourself.
I am so clever that sometimes I don't understand a single word of what I am saying.
As we acquire more knowledge, things do not become more comprehensible but more mysterious.
All stable processes we shall predict. All unstable processes we shall control.
Common sense is the collection of prejudices acquired by age eighteen.
Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.
Science is what we have learned about how to keep from fooling ourselves.
Knowing others is wisdom, knowing yourself is Enlightenment.
Reading is to the mind what exercise is to the body.
They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.
Make it a rule never to give a child a book you would not read yourself.
Books are for people who wish they were somewhere else.
Just when I thought there wasn't room enough for another thought in my head, I had this great idea.
I like poems you can tack all over with a hammer and there are no hollow places.
If there were no bad people, there would be no good lawyers.
What sculpture is to a block of marble, education is to a human soul.