真正的樂趣在於知其所以然，而不是知其然。 The true delight is in the finding out rather than in the knowing.

真正的樂趣在於知其所以然，而不是知其然。
The true delight is in the finding out rather than in the knowing.
美國科幻小說作家 艾西莫夫 Isaac Asimov