To every action there is always an equal and opposite or contrary, reaction

The man who is fond of books is usually a man of lofty thought, and elevated opinions.

All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.

A spirit of national masochism prevails, encouraged by an effete corps of impudent snobs who characterize themselves as intellectuals.

Knowledge becomes evil if the aim be not virtuous.

The deepest sin against the human mind is to believe things without evidence.

All stable processes we shall predict. All unstable processes we shall control.

I am so clever that sometimes I don't understand a single word of what I am saying.

Don't learn to do, but learn in doing.

If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.

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.

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.

Liberty without Learning is always in peril and Learning without Liberty is always in vain.

There is no authority who decides what is a good idea.

I decided to teach because I think that any person who studies philosophy has to be involved actively.

Education is a human right with immense power to transform. On its foundation rest the cornerstones of freedom, democracy and sustainable human development.

Industrialize or perish.

Men are born ignorant, not stupid. They are made stupid by education.

The more I read, the more I acquire, the more certain I am that I know nothing.

Don't worry that children never listen to you; worry that they are always watching you.

Common sense is the collection of prejudices acquired by age eighteen.