It's a waste of energy to be angry with a man who behves badly, just as it is to be angry with a car that won't go. Mathematics is the only science where one never knows what one is talking about nor whether what is said is true. Persecution is used in theology, not in arithmetic. No one gossips about other people's secret virtues. Of all forms of caution, caution in love is perhaps the most fatal to true happiness.
Sin is geographical.
Those who in principle oppose birth control are either incapable of arithmetic or else in favour of war, pestilence and famine as permanent features of human life. To acquire immunity to eloquence is of the utmost importance to the citizens of a democracy. To be without some of the things you want is an indispensible part of happiness. Never let the fear of striking out get in your way. Motivation is what gets you started.