Expect the unexpected

…nothing ought to be unexpected by us.  Our minds should be sent forward in advance to meet all problems, and we should consider, not what is likely to happen, but what can happen.

Seneca, letter 91. The letter opens with the news of the unprecedented burning down of Lyons, so Seneca is referring here to what we might now call black swan events.

Whatever tomorrow may bring…

Still from letter 88:

“What,” you say, “does tomorrow never prove me wrong?  Whatever happens without my knowledge proves me wrong.” I, for my part, do not know what is to be, but I do know what may come to be.  I shall have no misgivings in this matter; I await the future in its entirety; and if there is any abatement in its severity, I make the most of it.  If the morrow treats me kindly, it is a sort of deception; but it does not deceive me even at that.  For just as I know that all things can happen, so I know, too, that they will not happen in every case. I am ready for favourable events in every case, but I am prepared for evil.