She denies he forgot who she was, but admits he lost the house. If your parents are mathematicians, introduce yourself and get them to help you through the course. One of his students purchased an early automobile, and died in one of the first car accidents. Hilbert was asked to speak at the funeral. He had an unusual gift for doing mathematics.
Some mathematicians can be a little out of touch with reality.
If your professor falls in this category, look at the bright side.