Going through my bags recently, I found this notebook I bought a few years ago in Osaka during my last visit to Japan and I thought the little saying was hilarious. As is usually the case, it is unintentionally hilarious due to a bad English translation. In this case it’s only slightly off. Let me state right off the bat that I could be very wrong, but I would have translated the last line as: “Some you’ll like and some you’ll dislike, but all will nourish you.”
The name of the notebook seems wrong at first glance, too. As I’m sure everyone is aware, the Japanese language does not distinguish between the English “l” sound and the “r” sound; it has one sound that falls somewhere in between, meaning that the words “lock” and “rock” are basically the same. Based on that, I would have thought the title should read “School of Rock.” However, since they included a little picture of a keyhole, it would seem this one was intentional.