Man is a credulous animal, and must believe something; in the absence of good grounds for belief, he will be satisfied with bad ones.

Whatever we know without inference is mental.

Men have physical needs, and they have emotions. While physical needs are unsatisfied, they take first place; but when they are satisfied, emotions unconnected with them become important in deciding whether a man is to be happy or unhappy.

Orthodoxy is the death of intelligence.

Civilized life, if it is to be stable, must provide a harmless outlets for the impulses which our remote ancestors satisfied in hunting. In Australia, where people are few, and rabbits are many, I watched the whole populace satisfying the primitive impulse in the primitive manner by the skilful slaughter of many thousands of rabbits.

It appeared to me obvious that the happiness of mankind should be the aim of all action, and I discovered to my surprise that there were those who thought otherwise.

Broadly speaking, Protestants like to be good and have invented theology in order to keep themselves so, whereas Catholics like to be bad and have invented theology in order to keep their neighbors good. Hence, the social character of Catholicism and the individual character of Protestantism.