By a kind of happy pre-established harmony, such as a later age discovered between the needs of society and the self-interest of the individual, success in business is in itself almost a sign of spiritual grace, for it is a proof that a man has laboured faithfully in his vocation.
R. H. Tawney
The marketplace obliges men,
The marketplace obliges men, whether they will or not, in pursuing their own selfish interests, to connect the general good with their own individual success. Edmund Burke