7, 82.] We do not go, we are driven; like things that float, now leisurely, then with violence, according to the gentleness or rapidity of the current: "Nonne videmus, Quid sibi quisque velit, nescire, et quaerere semper Commutare locum, quasi onus deponere possit ?" ["Do we not see them, uncertain what they want, and always asking for something new, as if they could get rid of the burthen." -- Lucretius, iii.

1070.] Every day a new whimsy, and our humours keep motion with the time.
"Tales sunt hominum mentes, quali pater ipse Juppiter auctificas lustravit lumine terras." ["Such are the minds of men, that they change as the light with which father Jupiter himself has illumined the increasing earth." -- Cicero, Frag.

Poet, lib.

x.] We fluctuate betwixt various inclinations; we will nothing freely, nothing absolutely, nothing constantly.

In any one who had prescribed and established determinate laws and rules in his head for his own conduct, we should perceive an equality of manners, an order and an infallible relation of one thing or action to another, shine through his whole life; Empedocles observed this discrepancy in the Agrigentines, that they gave themselves up to delights, as if every day was their last, and built as if they had been to live for ever.