Another version

This too shall pass. All things must pass. You shall not pass.

From Anna Karenina, Levin talking:

“This is how I used to shudder and blush, thinking myself utterly lost, when I got a one in physics and did not get promoted; and how I thought myself utterly ruined after I had mismanaged that affair of my sister’s that was entrusted to me. And yet, now that years have passed, I recall it and wonder that it could distress me so much. It will be the same thing, too, with this trouble. Time will go by and I shall not mind about this either. ”