The real purpose of the scientific method is to make sure Nature hasn't misled you into thinking you know something you don't actually know. There's not a mechanic or scientist or technician alive who hasn't suffered from that one so much that he's not instinctively on guard. That's the main reason why so much scientific and mechanical information sounds so dull and so cautious. If you get careless or go romanticizing scientific information, give it a flourish here and there, Nature will soon make a complete fool out of you. It does it often enough anyway even when you don't give it opportunities. One must be extremely careful and rigidly logical when dealing with Nature: one logical slip and an entire scientific edifice comes tumbling down. One false deduction about the machine and you can get hung up indefinitely.

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The primitive tribes permitted far less individual freedom than does modern society. Ancient wars were committed with far less moral justification than modern ones. A technology that produces debris can find, and is finding, ways of disposing of it without ecological upset. And the schoolbook pictures of primitive man sometimes omit some of the detractions of his primitive life - the pain, the disease, famine, the hard labor needed just to stay alive. From that agony of bare existence to modern life can be soberly described only as upward progress, and the sole agent for this progress is quite clearly reason itself.

Grades really cover up failure to teach. A bad instructor can go through an entire quarter leaving absolutely nothing memorable in the minds of his class, curve out the scores on an irrelevant test, and leave the impression that some have learned and some have not. But if the grades are removed the class is forced to wonder each day what it’s really learning. The questions, What’s being taught? What’s the goal? How do the lectures and assignments accomplish the goal? become ominous. The removal of grades exposes a huge and frightening vacuum.

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Самая большая двойственность, между ним и мной, так и осталась нераскрытой. Раздвоение личности.
Кто же это сделал? Не я же. И никак нельзя исправить этого…Я всё думаю, насколько же глубоко дно у океана…
Я по существу раскаявшийся еретик, и поэтому в глазах всех спас свою душу. В глазах всех, кроме одного, который глубоко внутри знает, что спас он всего лишь шкуру.
Я существую теперь главным образом доставляя удовольствие другим. Так поступаешь, чтобы выбраться. Чтобы выбраться, надо сообразить, что они хотят от тебя услышать, затем произносишь всё как можно убедительнее и оригинальнее, и если убедил их, то тогда спасён.

There's an old analogy to a cup of tea. If you want to drink new tea you have to get rid of the old tea that's in your cup, otherwise your cup just overflows and you get a wet mess. Your head is like that cup. It has a limited capacity and if you want to learn something about the world you should keep your head empty in order to learn it. It's very easy to spend your whole life swishing old tea around in your cup thinking it's great stuff because you've never really tried anything new, because you could never get it in, because the old stuff prevented its entry, because you were so sure the old stuff was so good, because you never really tried anything new...