There are two things that we’ll never get to the bottom of. But the closest estimation we’ll get of both was given on slab of wood and crossbar a few thousands years ago.

Philosophers have measured mountains, Fathomed the depths of seas, of states, and kings, Walked with a staff to heav’n, and traced fountains: But there are two vast, spacious things, The which to measure it doth more behove: Yet few there are that sound them; Sin and Love.

—George Herbert