If I get a letter once in a while, if someone has found a book of mine interesting and wants to see me or have a chat, then that makes me even happier--the work hasn't all been wasted.
若是偶爾接到一封信，某某人看了我的書覺得很有趣味，要來看看我、或是邀我小敘，那更是非常高興，一切工夫都不是白做的了。