My friends always ask me this question and I don't know how to answer them. They want to know why we left our ancestral house.

Differing from Newton and Schopenhauer, your ancestor did not think of time as absolute and uniform.

We love to think about us and about our ancestors.

And there is only one explanation for that at the molecular level, which is common ancestor.

Some apparently primitive creatures are turning out to be the descendants of more complex creatures rather than their ancestors.