Don't worry that children never listen to you; worry that they are always watching you.
My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.
I think that kids have a greater capacity for processing things than we give them credit for.
The most savage controversies are those about matters as to which there is no good evidence either way.
Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.
There is nothing more awful, insulting, and depressing than banality.
Investigate, educate and organize the country must progress, productive works and industries are the main avenues at present next to education for the advancement of the country
Real learning comes about when the competitive spirit has ceased.
To educate a person in the mind but not in morals is to educate a menace to society.
Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.
No man's knowledge here can go beyond his experience.
Knowing others is wisdom, knowing yourself is Enlightenment.
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
The first principle is that you must not fool yourself and you are the easiest person to fool.
Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
If you're teaching today what you were teaching five years ago, either the field is dead or you are.
If you can't explain it simply, you don't understand it well enough.
The deepest sin against the human mind is to believe things without evidence.
The real solution lies in a world in which charity will have become unnecessary.
A thought is an idea in transit.
Any sufficiently advanced technology is indistinguishable from magic.