Meditations 8:49

Nothing but what you get from first impressions. That someone has insulted you, for instance. That—but not that it's done you any harm. The fact that my son is sick—that I can see. But "that he might die of it," no. Stick with first impressions. Don't extrapolate. And nothing can happen to you.

Or extrapolate. From a knowledge of all that can happen in the world.