Conserve, Reuse, Recycle.

1. The main point in Semrau's essay is, "Quite simply, use what you have until it can no longer function. Then it's time to recycle." 

2. The fact that Semrau intentionally keeps information from his readers helps the intent of the essay. Semrau explains that he has gone through the majority of his life already, and was looking for what to do next. At the end of his long career, he finally made the decision to retire. He then made the decision to be "green" and useful although his former career was over. He talks about how his childhood dream was to be a surgeon. He goes on in detail to say that being a surgeon was not right for him in the past, but he felt it may be right for him now. His word choice and style of writing leads the reader into thinking that he will be going to medical school at the age of seventy-five. He later reveals that he will be going as a cadaver. He explains that he feels that the best way to recycle, is to "reuse" himself. He says that this is the most effective way to be "green" that he can do. He does not formally tell the reader to do the same, but he provides valid and convincing arguments to follow his example. He wants to make the public aware of the simple things they can do to help the earth.