A real act of will results only when a present impulse to action, in the form of a concept or idea, acts on the characterological disposition. Such an impulse thereupon becomes the motive of the will.

The motives of moral conduct are ideas and concepts. There are Moralists who see in feeling also a motive of morality; they assert, e.g., that the end of moral conduct is to secure the greatest possible quantity of pleasure for the agent. Pleasure itself, however, can never be a motive; at best only the idea of pleasure can act as motive. The idea of a future pleasure, but not the feeling itself, can act on my characterological disposition. For the feeling does not yet exist in the moment of action; on the contrary, it has first to be produced by the action.

The idea of one’s own or another’s well-being is, however, rightly regarded as a motive of the will. The principle of producing the greatest quantity of pleasure for oneself through one’s action, that is, to attain individual happiness, is called Egoism. The attainment of this individual happiness is sought either by thinking ruthlessly only of one’s own good, and striving to attain it even at the cost of the happiness of other individuals (Pure Egoism), or by promoting the good of others, either because one anticipates indirectly a favourable influence on one’s own happiness through the happiness of others, or because one fears to endanger one’s own interest by injuring others (Morality of Prudence). The special content of the egoistical principle of morality will depend on the ideas which we form of what constitutes our own, or others’, good. A man will determine the content of his egoistical striving in accordance with what he regards as one of life’s good things (luxury, hope of happiness, deliverance from different evils, etc.).

Further, the purely conceptual content of an action is to be regarded as yet another kind of motive. This content has no reference, like the idea of one’s own pleasure, solely to the particular action, but to the deduction of an action from a system of moral principles. These moral principles, in the form of abstract concepts, may guide the individual’s moral life without his worrying himself about the origin of his concepts. In that case, we feel merely the moral necessity of submitting to a moral concept which, in the form of law, controls our actions. The justification of this necessity we leave to those who demand from us moral subjection, that is, to those whose moral authority over us we acknowledge (the head of the family, the state, social custom, the authority of the church, divine revelation). We meet with a special kind of these moral principles when the law is not proclaimed to us by an external authority, but comes from our own selves (moral autonomy). In this case we believe that we hear the voice, to which we have to submit ourselves, in our own souls. The name for this voice is conscience.

It is a great moral advance when a man no longer takes as the motive of his action the commands of an external or internal authority, but tries to understand the reason why a given maxim of action ought to be effective as a motive in him. This is the advance from morality based on authority to action from moral insight. At this level of morality, a man will try to discover the demands of the moral life, and will let his action be determined by this knowledge. Such demands are (1) the greatest possible happiness of humanity as a whole purely for its own sake, (2) the progress of civilisation, or the moral development of mankind towards ever greater perfection, (3) the realisation of individual moral ends conceived by an act of pure intuition.

The greatest possible happiness of humanity as a whole will naturally be differently conceived by different people. The above-mentioned maxim does not imply any definite idea of this happiness, but rather means that every one who acknowledges this principle strives to do all that, in his opinion, most promotes the good of the whole of humanity.

The progress of civilisation is seen to be a special application of the moral principle just mentioned, at any rate for those to whom the goods which civilisation produces bring feelings of pleasure. However, they will have to pay the price of progress in the destruction and annihilation of many things which also contribute to the happiness of humanity. It is, however, also possible that some men look upon the progress of civilisation as a moral necessity, quite apart from the feelings of pleasure which it brings. If so, the progress of civilisation will be a new moral principle for them, different from the previous one.

Both the principle of the public good, and that of the progress of civilisation, alike depend on the way in which we apply the content of our moral ideas to particular experiences (percepts). The highest principle of morality which we can conceive, however, is that which contains, to start with, no such reference to particular experiences, but which springs from the source of pure intuition and does not seek until later any connection with percepts, i.e., with life. The determination of what ought to be willed issues here from a point of view very different from that of the previous two principles. Whoever accepts the principle of the public good will in all his actions ask first what his ideals contribute to this public good. The upholder of the progress of civilisation as the principle of morality will act similarly. There is, however, a still higher mode of conduct which, in a given case, does not start from any single limited moral ideal, but which sees a certain value in all moral principles, always asking whether this or that principle is more important in a particular case. It may happen that a man considers in certain circumstances the promotion of the public good, in others that of the progress of civilisation, and in yet others the furthering of his own private good, to be the right course, and makes that the motive of his action. But when all other grounds of determination take second place, then we rely, in the first place, on conceptual intuition itself. All other motives now drop out of sight, and the ideal content of an action alone becomes its motive.

Among the levels of characterological disposition, we have singled out as the highest that which manifests itself as pure thought, or practical reason. Among the motives, we have just singled out conceptual intuition as the highest. On nearer consideration, we now perceive that at this level of morality the spring of action and the motive coincide, i.e., that neither a predetermined characterological disposition, nor an external moral principle accepted on authority, influence our conduct. The action, therefore, is neither a merely stereotyped one which follows the rules of a moral code, nor is it automatically performed in response to an external impulse. Rather it is determined solely through its ideal content.

For such an action to be possible, we must first be capable of moral intuitions. Whoever lacks the capacity to think out for himself the moral principles that apply in each particular case, will never rise to the level of genuine individual willing.