"Reading, after a certain age, diverts the mind too much from its creative pursuits. Any man who reads too much and uses his own brain too little falls into lazy habits of thinking."
"Strive not to be a success, but rather to be of value."
"That which is impenetrable to us really exists. Behind the secrets of nature remains something subtle, intangible, and inexplicable. Veneration for this force beyond anything that we can comprehend is my religion."
"Curiosity is more important than knowledge."
"The measure of intelligence is the ability to change."
"Combinatory play seems to be the essential feature in productive thought."