Such a separation could exist only if the personal attitudes ran their course in a world by themselves. But they are always responses to what is going on in the situation of which they are a part, and their successful or unsuccessful expression depends upon their interaction with other changes. Life activities flourish and fail only in connection with changes of the environment. They are literally bound up with these changes; our desires, emotions, and affections are but various ways in which our doings are tied up with the doings of things and persons about us. Instead of marking a purely personal or subjective realm, separated from the objective and impersonal, they indicate the non-existence of such a separate world. They afford convincing evidence that changes in things are not alien to the activities of a self, and that the career and welfare of the self are bound up with the movement of persons and things. Interest, concern, mean that self and world are engaged with each other in a developing situation. The word interest, in its ordinary usage, expresses (i) the whole state of active development, (ii) the objective results that are foreseen and wanted, and (iii) the personal emotional inclination. (I) An occupation, employment, pursuit, business is often referred to as an interest. Thus we say that a man's interest is politics, or journalism, or philanthropy, or archaeology, or collecting Japanese prints, or banking. (ii) By an interest we also mean the point at which an object touches or engages a man; the point where it influences him. In some legal transactions a man has to prove "interest" in order to have a standing at court. He has to show that some proposed step concerns his affairs. A silent partner has an interest in a business, although he takes no active part in its conduct because its prosperity or decline affects his profits and liabilities. (iii) When we speak of a man as interested in this or that the emphasis falls directly upon his personal attitude. To be interested is to be absorbed in, wrapped up in, carried away by, some object. To take an interest is to be on the alert, to care about, to be attentive. We say of an interested person both that he has lost himself in some affair and that he has found himself in it. Both terms express the engrossment of the self in an object.