It is rightly laid down that 'true knowledge is knowledge by causes'. Also the establishment of four causes is not bad: material, formal, efficient and final.
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.
You want accuracy, but not representation. If you know how to make the figuration, it doesn't work. Anything you can make, you make by accident. In painting, you have to know what you do, not how, when you do it.
Then bless thy secret growth, nor catch At noise, but thrive unseen and dumb; Keep clean, be as fruit, earn life, and watch, Till the white-wing'd reapers come.
Upon a given body to generate and superinduce a new nature or new natures is the work and aim of human power. To discover the Form of a given nature, or its true difference, or its causal nature, or fount of its emanation... this is the work and aim of human knowledge.
Learning hath his infancy, when it is but beginning and almost childish; then his youth, when it is luxuriant and juvenile; then his strength of years, when it is solid and reduced; and lastly his old age, when it waxeth dry and exhaust.