商业中最危险的心态是认为自己已经成功了。

当侦探就像当科学家一样，你必须注意到别人没注意到的事情。

To be human is to be vulnerable.

我所做的远比以往所做的更好；我所去的安息远比以往所知的更好。

I don't think that when people grow up, they will become more broad-minded and can accept everything.Conversely, I think it's a selecting process, knowing what's the most important and what's the least. And then be a simple man.

自己不愿意的，不要强加给别人。

"A book is a fragile creature, it suffers the wear of time, it fears rodents, the elements and clumsy hands. So the librarian protects the books not only against mankind but also against nature and devotes his life to this war with the forces of oblivion."