Good and evil both increase at compound interest. That is why the little decisions you and I make every day are of such infinite importance. The smallest good act today is the capture of a strategic point from which, a few months later, you may be able to go on to victories you never dreamed of. An apparently trivial indulgence in lust or anger today is the loss of a ridge or railway line or bridgehead from which the enemy may launch an attack otherwise impossible.

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

Mere Christianity, Book 3 “Christian Behavior,” ch. 7 “Forgiveness” (1952)
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