Excavation by Wilem de Kooning, 1950.
The first lines were written by Jean-Paul Sartre and the 'happiest man in the world' by the Swiss poet Blaise Cendrars (dans son Vie Dangereuse). The last lines are taken from Plato's discussion on rhetoric and dialectic (and attributed to Socrates in his Gorgias dialogue). The 'legislation of our bodies and temperance of our minds' is an ad hoc reference to the condition of the body and soul that appears in his discussions with Polus and Gorgias (at Callicles' house in Athens). Cendrars did not punctuate his lines.

For a better, and not necessarily marital explanation of consanguity, and a more extensive discussion of the 'infinitude' it shares, I can recommend An Essay on Collateral Consanguinity by Sir William Blackstone (1750).