Dare to think for yourself.
What we know is a drop, what we don't know is an ocean.
As we acquire more knowledge, things do not become more comprehensible but more mysterious.
A thought is an idea in transit.
Those who fail to learn the lessons of history are doomed to repeat them.
The secret of life is not enjoyment but education through experience.
Imagination is the source of every form of human achievement. And it's the one thing that I believe we are systematically jeopardizing in the way we educate our children and ourselves.
Industrialize or perish.
Many much-learned men have no intelligence.
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.
Reading is to the mind what exercise is to the body.
Patience is a virtue, and I'm learning patience. It's a tough lesson.
Most people have never learned that one of the main aims in life is to enjoy it.
Never help a child with a task at which he feels he can succeed.
A child miseducated is a child lost.
If you can't explain it simply, you don't understand it well enough.
Education is the most powerful weapon which you can use to change the world.
Better know nothing than half-know many things.
Investigate, educate and organize.
If I have seen further it is by standing on the shoulders of Giants.
Common sense is the collection of prejudices acquired by age eighteen.