The test of a round character is whether it is capable of surprising in a convincing way. If it never surprises it is flat. Flat characters ... in their purest form ... are constructed round a single idea or quality; when there is more than one factor to them, we get the beginning of the curve toward the round. The really flat character can be experessed in one sentence such as, "I will never desert Mr Micawber." There is Mrs Micawber - she says she won't desert Mr Micawber; she doesn't, and there she is.
E. M. ForsterIt so happened that Lucy, who found daily life rather chaotic, entered a more solid world when she opened the piano. She was then no longer either deferential or patronizing; no longer either a rebel or a slave.
E. M. ForsterWhy can't we be friends now?" said the other, holding him affectionately. "It's what I want. It's what you want." But the horses didn't want it — they swerved apart: the earth didn't want it, sending up rocks through which riders must pass single file; the temple, the tank, the jail, the palace, the birds, the carrion, the Guest House, that came into view as they emerged from the gap and saw Mau beneath: they didn't want it, they said in their hundred voices "No, not yet," and the sky said "No, not there.
E. M. Forster