Any sufficiently advanced technology is indistinguishable from magic.
Study without desire spoils the memory, and it retains nothing that it takes in.
Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.
Know what you are talking about.
When you know better you do better.
They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
The deepest sin against the human mind is to believe things without evidence.
My weapon is literature
A witty saying proves nothing.
Science is a way of thinking much more than it is a body of knowledge.
Patience is a virtue, and I'm learning patience. It's a tough lesson.
A spirit of national masochism prevails, encouraged by an effete corps of impudent snobs who characterize themselves as intellectuals.
The progressive development of man is vitally dependent on invention.
I cannot teach anybody anything. I can only make them think
Investigate, educate and organize.
Language is courage: the ability to conceive a thought, to speak it, and by doing so to make it true.
Education is the best friend. An educated person is respected everywhere. Education beats the beauty and the youth.
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.
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.
The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.