...those experiments be not only esteemed which have an immediate and present use, but those principally which are of most universal consequence for invention of other experiments, and those which give more light to the invention of causes; for the invention of the mariner's needle, which giveth the direction, is of no less benefit for navigation than the invention of the sails, which give the motion.
Children sweeten labours. But they make misfortune more bitter. They increase the care of life. But they mitigate the remembrance of death. The perpetuity of generation is common to beasts. But memory, merit and noble works are proper to men. And surely a man shall see the noblest works and foundations have proceeded from childless men which have sought to express the images of their minds where those of their bodies have failed.
The men of experiment are like the ant, they only collect and use; the reasoners resemble spiders, who make cobwebs out of their own substance. But the bee takes the middle course, it gathers its material from the flowers of the garden and field, but transforms and digests it by a power of its own.
If I go to the National Gallery and I look at one of the great paintings that excite me there, it's not so much the painting that excites me as that the painting unlocks all kinds of valves of sensation within me which return me to life more violently.
The human understanding is like a false mirror, which, receiving rays irregularly, distorts and discolors the nature of things by mingling its own nature with it.