The quotation about Isaac Newton was a poor choice for this essay as it was clearly allegorical about Newton himself. Even if you don’t know anything about the man, it should be clear from the claim that marriage might be a sin.

In reality, the comment reflects four important things about Newton: 1 - marriage: he never married and once complained about someone trying to set him up with a woman; 2 - heresy: he was a reformation era figure, quite religious in his Protestant (heretical to some) beliefs; 3 - crime: as master of the mint he bestowed justice high (mostly) and low on forgers and other criminals within his authority (and not in Cambridge) which leads to 4 - sin: a nice intensifying noun that encompasses not only his intense religious nature but the zeal with which he pursued and punished criminals and many with whom he disagreed, including friends.