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Science, like art, religion, commerce, warfare, and even sleep, is based on presuppositions. It differs, however, from most other branches of human activity in that not only are the pathways of scientific thought determined by the presuppositions of the scientists but their goals are the testing and revision of old presuppositions and the creation of new.
A man can keep silence in such a ways that no one will even notice it. The whole point is that we say a good deal too much. If we limited ourselves to what is actually necessary, this alone would be keeping the silence. And it is the same with everything else, with food, with pleasures, with sleep; with everything there is a limit to what is necessary. After this "sin" begins. This is something that must be grasped, a "sin" is something which is not necessary.
What early tongue so sweet saluteth me? Young son, it argues a distemper'd head So soon to bid good morrow to thy bed: Care keeps his watch in every old man's eye, And where care lodges, sleep will never lie; But where unbruised youth with unstuff'd brain Doth couch his limbs, there golden sleep doth reign: