答案：Because he found that the little man was not clever and had nothing to teach him.
根據(jù)最后一段倒數(shù)第1-3行：
If he did, then these little people of the future were not very clever. I was very disappointed. 'These people have nothing to teach us,' I thought.
如果他知道，那么這些未來的小人就不太聰明了。我非常失望?！@些人沒有什么可教我們的，’我想。
可知答案為：Because he found that the little man was not clever and had nothing to teach him.
（注意結(jié)合原句進(jìn)行歸納、總結(jié)。）
