"The most beautiful emotion we can experience is the mystical. It is the sower of all true art and science."

"If A is a success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut."

"The human mind has first to construct forms, independently, before we can find them in things."

"The difference between genius and stupidity is that genius has its limits."

"I do not believe in the God of theology who rewards good and punishes evil."