Aaah please, who cares what his motives are? Everyone has motives. The point is that Penrose has written at detailed length of his views and why he thinks they are correct. If you or others cannot refute them with facts, then his view has to be listened to regardless of whatever his motives are.
Motives are the classical Communist form of argument when the facts cannot be contradicted. It is a variation of the Clintonian politics of personal destruction, it is known throughout history as attacking the messenger and it is a totally false and a pretty despicable way of discussing the validity of ideas.
Have you actually read any of Penroses' books, Gore3000?