He didn't even begin to fulfill what we can think of as his epic promise until he was nearly fifty years old, until he had actually lost the use of his eyes, until he could no longer read, and until he could no longer use a pen to write.

但真正开始实行他要写史诗的愿望的时候,弥尔顿已经将近50岁了，那是他已经几乎,丧失了视力，不能再读书，不能执笔写作。

耶鲁公开课 - 弥尔顿课程节选