Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
The fullness of knowledge only comes through the awareness of ignorance.
I am so clever that sometimes I don't understand a single word of what I am saying.
Words can be like X-rays if you use them properly - they'll go through anything. You read and you?re pierced.
Men are born ignorant, not stupid. They are made stupid by education.
Knowing others is wisdom, knowing yourself is Enlightenment.
Education is the most powerful weapon which you can use to change the world.
Make it a rule never to give a child a book you would not read yourself.
Science is a rising force, It is creating a new world about us. It needs to be watched and pressed into service, and in any case, it would be courting disaster to ignore it.
God created man in His own image, says the Bible; philosophers reverse the process: they create God in theirs.
The only true wisdom is in knowing you know nothing.
The books that the world calls immoral are books that show the world its own shame.
The man who does not read good books has no advantage over the man who can't read them.
The schools ain't what they used to be and never was.
If help and salvation are to come, they can only come from the children, for the children are the makers of men.
If you want the present to be different from the past, study the past.
Just when I thought there wasn't room enough for another thought in my head, I had this great idea.
Know what you are talking about.
You can never learn less, you can only learn more.
All stable processes we shall predict. All unstable processes we shall control.