“The poem or the discovery exists in two moments of vision: the moment of appreciation as much as that of creation; for the appreciator must see the movement, wake to the echo which was started in the creation of the work. In the moment of appreciation we live again the moment when the creator saw and held the hidden likeness. When a simile takes us aback and persuades us together, when we find a juxtaposition in a picture both odd and intriguing, when a theory is at once fresh and convincing, we do not merely nod over someone else's work. We re-enact the creative act, and we ourselves make the discovery again......Reality is not an exhibit for man's inspection, labeled: "Do not touch." There are no appearances to be photographed, no experiences to be copied, in which we do not take part. We re-make nature by the act of discovery, in the poem or in the theorem. And the great poem and the deep theorem are new to every reader, and yet are his own experiences, because he himself re-creates them. They are the marks of unity in variety; and in the instant when the mind seizes this for itself, in art or in science, the heart misses a beat.”

“Every animal leaves traces of what it was man alone leaves traces of what he created. ”

“You will die but the carbon will not; its career does not end with you. It will return to the soil, and there a plant may take it up again in time, sending it once more on a cycle of plant and animal life.”

“We are all afraid for our confidence, for the future, for the world. That is the nature of the human imagination. Yet every man, every civilization, has gone forward because of its engagement with what it has set itself to do.”

“Knowledge is an unending adventure at the edge of uncertainty.”

“Power is the by-product of understanding.”

“No science is immune to the infection of politics and the corruption of power.”

“Man masters nature not by force but by understanding. This is why science has succeeded where magic failed: because it has looked for no spell to cast over nature.”

“We are all shot through with enough motives to make a massacre any day of the week that we want to give them their head.”

“The world is made up of people who never quite get into the first team and who just miss the prizes at the flower show.”

“We are all afraid - for our confidence for the future for the world. That is the nature of the human imagination. Yet every man every civilization has gone forward because of its engagement with what it has set itself to do. The personal commitment and the emotional commitment working together as one has made the Ascent of Man.”