Poets do not go mad; but chess-players do. Mathematicians go mad, and cashiers; but creative artists very seldom. I am not, as will be seen, in any sense attacking logic: I only say that this danger does lie in logic, not in imagination.
There are many definite methods, honest and dishonest, which make people rich; the only instinct I know of which does it is that instinct which theological Christianity crudely describes as the sin of avarice.
If Christianity should happen to be true - that is to say, if its God is the real God of the universe - then defending it may mean talking about anything and everything.
When people talk as if the Crusades were nothing more than an aggressive raid against Islam, they seem to forget in the strangest way that Islam itself was only an aggressive raid against the old and ordered civilization in these parts. I do not say it in mere hostility to the religion of Mahomet; I am fully conscious of many values and virtues in it; but certainly it was Islam that was the invasion and Christendom that was the thing invaded.
A good Moslem king was one who was strict in religion, valiant in battle, just in giving judgment among his people, but not one who had the slightest objection in international matters to removing his neighbour's landmark.
IF we desire European civilization to be a raid and a rescue, we shall insist rather that souls are in real peril than that their peril is ultimately unreal. And if we wish to exalt the outcast and the crucified, we shall rather wish to think that a veritable God was crucified, rather than a mere sage or hero. Above all, if we wish to protect the poor we shall be in favour of fixed rules and clear dogmas. The rules of a club are occasionally in favour of the poor member. The drift of a club is always in favour of the rich one.
Every act of will is an act of self-limitation. To desire action is to desire limitation. In that sense, every act is an act of self-sacrifice. When you choose anything, you reject everything else.