"Having integrity...means being completely true to what is inside you - to what you know is right...what you feel you must do, regardless of the immediate cost of sacrifice...to be honorable and to behave decently."

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When you are not feeling particularly friendly but know you ought to be, the best thing you can do, very often, is to put on a friendly manner and behave as if you were a nicer person than you actually are. And in a few minutes, as we have all noticed, you will be really feeling friendlier than you were.

— C. S. Lewis