For the chain of causes cannot by any force be loosed or broken, nor can nature be commanded except by being obeyed.

Medical men do not know the drugs they use, nor their prices.

But the greatest error of all the rest is the mistaking or misplacing of the last or farthest end of knowledge: for men have entered into a desire of learning and knowledge, sometimes upon a natural curiosity and inquisitive appetite; sometimes to entertain their minds with variety and delight; sometimes for ornament and reputation; and sometimes to enable them to victory of wit and contradiction; and most times for lucre and profession; and seldom sincerely to give a true account of their gift of reason, to the benefit and use of men.

Croesus said to Cambyses; That peace was better than war; because in peace the sons did bury their fathers, but in wars the fathers did bury their sons.

Young men, in the conduct and manage of actions, embrace more than they can hold; stir more than they can quiet; fly to the end, without consideration of the means and degrees; pursue some few principles, which they have chanced upon absurdly; care not to innovate, which draws unknown inconveniences; use extreme remedies at first; and, that which doubleth all errors, will not acknowledge or retract them; like an unready horse, that will neither stop nor turn.

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.

By this means we presume we have established for ever, a true and legitimate marriage between the Empirical and Rational faculty; whose fastidious and unfortunate divorce and separation hath troubled and disordered the whole race and generation of mankind.