I never guess. It is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.
我从不猜测。在拥有数据之前进行理论化是一个重大错误。不知不觉中，人们开始扭曲事实以适应理论，而不是调整理论以适应事实。
不通过学习却想要获取知识，就好像想要得到鱼却没有渔网一样。
The world is all the richer for having a devil in it, so long as we keep our foot upon his neck.
A man's errors are his portals of discovery.