Let me just say that to imagine racism does not exist is imagination. And to imagine that it does not create its own set of problems is true imagination. So let's not imagine that racism is gone extinguished because it's not. We are seeing this in the top levels of the political arena and we are seeing it very very plainly.
The mathematical facts worthy of being studied are those which by their analogy with other facts are capable of leading us to the knowledge of a physical law.