After an error you need not only to remove the causes but also to correct the error itself: after a sin you must not only, if possible, remove the temptation, you must also go back and repent the sin itself. In each case an 'undoing' is required.
C. S. LewisSurely what a man does when he is taken off his guard is the best evidence for what sort of man he is.
C. S. LewisAnd out of that hopeless attempt has come nearly all that we call human historyโmoney, poverty, ambition, war, prostitution, classes, empires, slaveryโthe long terrible story of man trying to find something other than God which will make him happy.
C. S. LewisNow Eros makes a man really want, not a woman, but one particular woman. In some mysterious but quite indisputable fashion the lover desires the Beloved herself, not the pleasure she can give.
C. S. LewisThere have been men before who got so interested in proving the existence of God that they came to care nothing for God himself, as if the good Lord had nothing to do but to exist. There have been some who were so preoccupied with spreading Christianity that they never gave a thought to Christ.
C. S. Lewis