"Try and penetrate with our limited means the secrets of nature and you will find that, behind all the descernible laws and connections, there remains something subtle, intangible and inexplicable. Veneration for this force beyond anything that we can comprehend is my religion. To that extent I am, in fact, religious."
"You never fail until you stop trying."
"Wisdom is not a product of schooling but of the lifelong attempt to acquire it."
"No, this trick won't work... How on earth are you ever going to explain in terms of chemistry and physics so important a biological phenomenon as first love?"
"One thing I have learned in a long life: that all our science, measured against reality, is primitive and childlike -- and yet it is the most precious thing we have."
"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"