All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.
A thought is an idea in transit.
If the facts don't fit the theory, change the facts.
Make it a rule never to give a child a book you would not read yourself.
Just because I don't care doesn't mean I don't understand.
Don't worry that children never listen to you; worry that they are always watching you.
I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.
I think that kids have a greater capacity for processing things than we give them credit for.
Books are as useful to a stupid person as a mirror is useful to a blind person.
The direction in which education starts a man will determine his future in life
The more I read, the more I acquire, the more certain I am that I know nothing.
The progressive development of man is vitally dependent on invention.
Science is what we have learned about how to keep from fooling ourselves.
Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
Reading without reflecting is like eating without digesting.
With educated people, I suppose, punctuation is a matter of rule; with me it is a matter of feeling. But I must say I have great respect for the semi-colon; it's a useful little chap.
Science is not only a disciple of reason but, also, one of romance and passion.
Civilization is a race between disaster and education.
Imagination is more important than knowledge.
Dare to think for yourself.
The real solution lies in a world in which charity will have become unnecessary.