相田みつを - source of sentences

Hi, In my continuous search for sentences, a friend sugested that I used some of 相田みつを (Aida Mitsuo) poems. She said if I understood his poems, I'd understand japanese people.

I stumbled upon pages like this:
http://sanyou.mydns.to/images/aidamituo.htm

So far, I'm astonished.