C. S. Lewis wrote in Mere Christianity:
Every time you make a choice you are turning the central part of you, the part of you that chooses, into something a little different from what it was before. And taking your life as a whole, with all your innumerable choices, all your life long you are slowly turning this central thing either into a heavenly creature or into a hellish creature: either into a creature that is in harmony with God, and with other creatures, and with itself, or else into one that is in a state of war and hatred with God, and with its fellow creatures, and with itself. To be the one kind of creature is heaven: that is, it is joy and peace and knowledge and power. To be the other means madness, horror, idiocy, rage, and eternal loneliness. Each of us at each moment is progressing to the one state or the other.
One man may be so placed that his anger sheds the blood of thousands, and another so placed that however angry he gets he will only be laughed at. But the little mark on the soul may be much the same in
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