"The greatest scientists are artists as well."

"Peace cannot be kept by force; it can only be achieved by understanding."

"The important thing is not to stop questioning. Curiosity has its own reason for existence."

"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."

"I am not only a pacifist but a militant pacifist. I am willing to fight for peace."