Progress means getting nearer to the place where you want to be. And if you have taken a wrong turning, then to go forward does not get you any nearer. If you are on the wrong road, progress means doing an about-turn and walking back to the right road; and in that case, the man who turns back soonest is the most progressive.

C. S. Lewis (1898-1963) English writer, literary scholar, lay theologian [Clive Staples Lewis]

Mere Christianity, Book 1, ch. 5 “We Have Cause to be Uneasy” (1952)
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Originally broadcast on BBC Radio (27 Aug 1941) under the title "What Can We Do About It?" Reprinted first in Broadcast Talks (1943) (US title The Case for Christianity (1944)).