In carefully scrutinizing the affairs of the past, we find that there are many different opinions about them, and that there are some things that are quite unclear. It is better to regard such things as unknowable. Lord Sanenori once said, “As for the things that we don’t understand, there are ways of understanding them. Furthermore, there are some things we understand just naturally, and again some that we can’t understand no matter how hard we try. This is interesting.” This is very profound. It is natural that one cannot understand deep and hidden things. Those things that are easily understood are rather shallow.
Yamamoto Tsunetomo – Hagakure : The Book of the Samurai