What is the explanation about temperance of the cardinal virtues in the Mere Christianity book by C. S. Lewis? What is the explanation of the points Lewis discusses in Chapter 1 - Three Parts of Morality are present in the Virtue?
In Chapter 3 - Social Morality to explain how the Virtue, if present in the individual would benefit society.

Explanation:

ans1- Lewis dislikes the stereotype that Christians are somehow ignorant or naïve in their view of the world; he wants to make it clear that good Christians can also be highly intelligent and insightful. Temperance, nowadays, means teetotalism, but it used to mean restraint and moderation in all pleasures, not just drinking.12-Jan-2017

Ans2-The Moral Law tells us the tune we have to play: our instincts are merely the keys. Another way of seeing that the Moral Law is not simply one of our instincts is this. If two instincts are in conflict, and there is nothing in a creature's mind except those two instincts, obviously the stronger of the two must win.