As part of his famous correspondence with George Sand, Gustave Flaubert wrote the following about reincarnation:

I don’t experience, as you do, this feeling of a life which is beginning, the stupefaction of a newly commenced existence. It seems to me, on the contrary, that I have always lived! And I possess memories which go back to the Pharaohs. I see myself very clearly at different ages of history, practising different professions and in many sorts of fortune. My present personality is the result of my lost personalities. I have been a boatman on the Nile, a leno in Rome at the time of the Punic wars, then a Greek rhetorician in Subura where I was devoured by insects. I died during the Crusade from having eaten too many grapes on the Syrian shores, I have been a pirate, monk, mountebank and coachman. Perhaps also even emperor of the East?

Many things would be explained if we could know our real genealogy. For, since the elements which make a man are limited, should not the same combinations reproduce themselves? Thus heredity is a just principle which has been badly applied.