The secret of life is not enjoyment but education through experience.
Investigate, educate and organize.
When I am attacked by gloomy thoughts, nothing helps me so much as running to my books. They quickly absorb me and banish the clouds from my mind.
It isn't what we don't know that gives us trouble, it's what we know that ain't so.
The first principle is that you must not fool yourself and you are the easiest person to fool.
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.
An investment in knowledge pays the best interest.
A little knowledge that acts is worth infinitely more than much knowledge that is idle.
Evil being the root of mystery, pain is the root of knowledge.
No man's knowledge here can go beyond his experience.
I decided to teach because I think that any person who studies philosophy has to be involved actively.
It is better to know how to learn than to know.
Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.
Books are for people who wish they were somewhere else.
Science is a rising force, It is creating a new world about us. It needs to be watched and pressed into service, and in any case, it would be courting disaster to ignore it.
A child miseducated is a child lost.
Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.
Liberty without Learning is always in peril and Learning without Liberty is always in vain.
Many much-learned men have no intelligence.
The more I read, the more I acquire, the more certain I am that I know nothing.
He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.