The thinking man must oppose all cruel customs no matter how deeply rooted in tradition and surrounded by a halo. When we have a choice, we must avoid bringing torment and injury into the life of another, even the lowliest creature; to do so is to renounce our manhood and shoulder a guilt which nothing justifies.
A natural pause or break in a line of poetry, usually near the middle of the line. There is a caesura right after the question mark in the first line of this sonnet by Elizabeth Barrett Browning: "How do I love thee? Let me count the ways."