Some people will be very disappointed if there is not an ultimate theory, that can be formulated as a finite number of principles. I used to belong to that camp, but I have changed my mind. I'm now glad that our search for understanding will never come to an end, and that we will always have the challenge of new discovery.wIthout it, we would stagnate. Goedels theorem ensured there would always be a job for mathematicians.I think M theory will do the same for physicists. I'm sure Dirac would have approved.
Gödel and the end of physics, Stephen Hawking