上句见：Day112
The Story of Philosophy的第113句：第1章Plato第2节II. Socrates第4段第6句：

Why did his pupils reverence him so? Perhaps because he was a man as well as a philosopher: he had at great risk saved the life of Alcibiades in battle; and he could drink like a gentleman — without fear and without excess. But no doubt they liked best in him the modesty of his wisdom: he did not claim to have wisdom, but only to seek it lovingly; he was wisdom’s amateur, not its professional. It was said that the oracle at Delphi, with unusual good sense, had pronounced him the wisest of the Greeks; and he had interpreted this as an approval of the agnosticism which was the starting-point of his philosophy— “One thing only I know, and that is that I know nothing.” Philosophy begins when one learns to doubt— particularly to doubt one’s cherished beliefs, one’s dogmas and one’s axioms. Who knows how these cherished beliefs became certainties with us, and whether some secret wish did not furtively beget them, clothing desire in the dress of thought? There is no real philosophy until the mind turns round and examines itself. Gnothi seauton, said Socrates: Know thyself.
浙江大学译本：谁知道这些信念是如何令我们深信不疑的呢？谁又能知道它们不是被一些隐藏在思想外衣下的不可告人的欲望引发的呢？

解析

这句用反问来表示怀疑的例子。
1、Who knows how these cherished beliefs became certainties with us,
诘问：谁知道这些珍视的信念如何令我们深信不疑？

2、and whether some secret wish did not furtively beget them, clothing desire in the dress of thought?
再问：是否某些隐秘的愿望并没有将欲望披着思想的外衣悄悄地产生它们。
furtively：其形容词furtive，done in a quiet and secret way to avoid being noticed，偷偷摸摸的，秘密的
A small trickle of witches and wizards was creeping furtively up the otherwise deserted street to visit the hospital.只有一些去医院的巫师悄悄走在寂静无入的街上。《哈里波特》
in the dress of：穿着
We had hardly reached the third pillar, which was our rendezvous, before a small, dark, brisk man in the dress of a coachman accosted us.
我们刚刚走近约定的第三个柱子前面，就来了一个身材短小、面貌黧黑、穿着马车夫装束的精壮男子，向我们招呼。《福尔摩斯》

谁知道这些珍视的信念如何令我们深信不疑？谁知道它们又何曾不是某些私密的愿望披着思想的外衣悄悄形成的呢？