Science has taught us that what we see and touch is not what is really there.
Hans Christian von BaeyerThe switch from 'steam engines' to 'heat engines' signals the transition from engineering practice to theoretical science.
Hans Christian von BaeyerParadox is the sharpest scalpel in the satchel of science. Nothing concentrates the mind as effectively, regardless of whether it pits two competing theories against each other, or theory against observation, or a compelling mathematical deduction against ordinary common sense.
Hans Christian von Baeyer