Opinion is the medium between knowledge and ignorance.
Necessity is the mother of invention.
If I have seen further it is by standing on the shoulders of Giants.
My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.
I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.
In order to stave off covetouness, greed, and spite, citizens world over must be educated.
Reading is to the mind what exercise is to the body.
Don't learn to do, but learn in doing.
Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.
We could never learn to be brave and patient, if there were only joy in the world
Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.
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.
A cynic is a man who knows the price of everything, and the value of nothing.
Education is the best friend. An educated person is respected everywhere. Education beats the beauty and the youth.
Real knowledge is to know the extent of one's ignorance.
Science is not only a disciple of reason but, also, one of romance and passion.
I cannot teach anybody anything. I can only make them think
I had rather excel others in the knowledge of what is excellent, than in the extent of my power and dominion
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.