Progress is the exploration of our own error. Evolution is a consolidation of what have always begun as errors. And errors are of two kinds: errors t… - Jacob Bronowski

The symbol and the metaphor are as necessary to science as to poetry.

Rachel : "My father is cunning, and thou art not his match." Jacob: "I am his brother in cunning." Rachel: "But is deception becoming unto the pious?" Jacob: "Yes, 'with the righteous righteousness is seemly, and with the deceiver deception.'

The progress of science is the discovery at each step of a new order which gives unity to what had long seemed unlike. Faraday did this when he closed the link between electricity and magnetism. Clerk Maxwell did it when he linked both with light. Einstein linked time with space, mass with energy, and the path of light past the sun with the flight of a bullet; and spent his dying years in trying to add to these likenesses another, which would find a single imaginative order between the equations between Clerk Maxwell and his own geometry of gravitation When Coleridge tried to define beauty, he returned always to one deep thought: beauty he said, is "unity in variety." Science is nothing else than the search to discover unity in the wild variety of nature — or more exactly, in the variety of our experience.