For very philosophical writings about this, read "Last and First Men" and "Star Maker" by Olaf Stapledon. Written in the 1930's, these describe on a very expan

For very philosophical writings about this, read "Last and First Men" and "Star Maker" by Olaf Stapledon. Written in the 1930's, these describe on a very expansive scale the history of, respectively, humanity and the universe. Very mind bending.