there the good of the society requires, that several things should be left to the discretion of him that has the executive power: for the legislators not being able to foresee, and provide by laws, for all that may be useful to the community, the executor of the laws having the power in his hands, has by the common law of nature a right to make use of it for the good of the society, in many cases, where the municipal law has given no direction, till the legislative can conveniently be assembled to provide for it.