Ethical subjectivism is commonly held to be a dangerous doctrine, destructive to morality, opening the door to all sorts of libertinism. If that which appears to each man as right or good, stands for that which is right or good; if he is allowed to make his own law, or to make no law at all; then, it is said, everybody has the natural right to follow his caprice and inclinations, and to hinder him from doing so is an infringement on his rights, a constraint with which no one is bound to comply provided that he has the power to evade it. This inference was long ago drawn from the teaching of the Sophists,[26] and it will no doubt be still repeated as an argument against any theorist who dares to assert that nothing can be said to be truly right or wrong. [Footnote 26: Zeller, _History of Greek Philosophy_, ii. 475.] To this argument may, first, be objected that a scientific theory is not invalidated by the mere fact that it is likely to cause mischief. The unfortunate circumstance that there do exist dangerous things in the world, proves that something may be dangerous and yet true. Another question is whether any scientific truth really is mischievous {19} on the whole, although it may cause much discomfort to certain people. I venture to believe that this, at any rate, is not the case with that form of ethical subjectivism which I am here advocating. The charge brought against the Sophists does not at all apply to it. I do not even subscribe to that beautiful modern sophism which admits every man's conscience to be an infallible guide. If we had to recognise, or rather if we did recognise, as right everything which is held to be right by anybody, savage or Christian, criminal or saint, morality would really suffer a serious loss. But we do not, and we cannot, do so. My moral judgments are my own judgments; they spring from my own moral consciousness; they judge of the conduct of other men not from their point of view but from mine, not with primary reference to their opinions about right and wrong, but with reference to my own. Most of us indeed admit that, when judging of an act, we also ought to take into consideration the moral conviction of the agent, and the agreement or disagreement between his doing and his idea of what he ought to do. But although we hold it to be wrong of a person to act against his conscience, we may at the same time blame him for having such a conscience as he has. Ethical subjectivism covers all such cases. It certainly does not allow everybody to follow his own inclinations; nor does it lend sanction to arbitrariness and caprice. Our moral consciousness belongs to our mental constitution, which we cannot change as we please. We approve and we disapprove because we cannot do otherwise. Can we help feeling pain when the fire burns us? Can we help sympathising with our friends? Are these phenomena less necessary or less powerful in their consequences, because they fall