Page:The wealth of nations, volume 3.djvu/141

 capable of managing it successfully; or to exempt a particular set of dealers from some of the general laws which take place with regard to all their neighbors, merely because they might be capable of thriving, if they had such an exemption, would certainly not be reasonable. To render such an establishment perfectly reasonable, with the circumstance of being reducible to strict rule and method, two other circumstances ought to concur. First, it ought to appear with the clearest evidence, that the undertaking is of greater and more general utility than the greater part of common trades; and secondly, that it requires a greater capital than can easily be collected into a private copartnery. If a moderate capital were sufficient the great utility of the undertaking would not be a sufficient reason for establishing a joint stock company; because, in this case, the demand for what it was to produce, would readily and easily be supplied by private adventurers. In the four trades above mentioned, both those circumstances concur.

The great and general utility of the banking trade when prudently managed, has been fully explained in the Second Book of this inquiry. But a public bank which is to support public credit, and upon particular emergencies to advance to government the whole produce of a tax, to the amount, perhaps, of several millions, a year or two before it comes in, requires a greater capital than can easily be collected into any private copartnery.

The trade of insurance gives great security to the fortunes of private people, and by dividing among a great many that loss which would ruin an individual, makes it fall light and easy upon the whole society. In order to give this security, however, it is necessary that the in-