The whole of science is nothing more than a refinement of everyday thinking.
Imagination is more important than knowledge.
A witty saying proves nothing.
Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.
If help and salvation are to come, they can only come from the children, for the children are the makers of men.
Opinion is the medium between knowledge and ignorance.
All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.
The knowledge of all things is possible
To every action there is always an equal and opposite or contrary, reaction
Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.
Science is a way of thinking much more than it is a body of knowledge.
Just when I thought there wasn't room enough for another thought in my head, I had this great idea.
What sculpture is to a block of marble, education is to a human soul.
The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.
Those who fail to learn the lessons of history are doomed to repeat them.
It is beyond a doubt that all our knowledge begins with experience.
As we acquire more knowledge, things do not become more comprehensible but more mysterious.
Civilization is a race between disaster and education.
A spirit of national masochism prevails, encouraged by an effete corps of impudent snobs who characterize themselves as intellectuals.
If you want the present to be different from the past, study the past.
In mathematics you don't understand things. You just get used to them.