It is possible to fly without motors, but not without knowledge and skill.
Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.
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.
Education is the ability to listen to almost anything without losing your temper or your self-confidence.
Knowing is not enough; we must apply. Willing is not enough; we must do.
What is freedom of expression? Without the freedom to offend, it ceases to exist.
The task of a writer is not to solve the problem but to state the problem correctly.
The books that the world calls immoral are books that show the world its own shame.
I learned very early the difference between knowing the name of something and knowing something.
Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.
The most important part of teaching is to teach what it is to know.
A child miseducated is a child lost.
A child educated only at school is an uneducated child.
I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.
If one cannot enjoy reading a book over and over again, there is no use in reading it at all.
What is now proved was once only imagined.
All stable processes we shall predict. All unstable processes we shall control.
Free the child's potential, and you will transform him into the world.
Books are for people who wish they were somewhere else.
They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.
It is not enough for the teacher to love the child. She must first love and understand the universe. She must prepare herself, and truly work at it.