Read it through once

But wherefore should a man be benevolent and just? The immediate emotions of his nature, especially in its most inartificial state, prompt him to inflict pain, and to arrogate dominion. He desires to heap superfluities to his own store, although others perish with famine. He is propelled to guard against the smallest invasion of his own liberty, though he reduces others to a condition of the most pitiless servitude. He is revengeful, proud and selfish. Wherefore should he curb these propensities?