It is a man's own fault, it is from want of use, if his mind grow torpid in old age.

It is a man's own fault, it is from want of use, if his mind grow torpid in old age.

如果一个人年老时头脑迟钝，那是他自己的过错，是由于没有用处。

-- Samuel Johnson 塞缪尔·约翰逊