Martin Bucer, in Instructions in Christian Love (via Jake Meader):
God established these two general orders, the spiritual ministry and the secular authority, in order to further the public good. They could perceptibly bring it about if they attended to their commission, but they could also irreparably injure it if they sought on their own interest. Below the aforesaid two orders are the most Christian orders or professions. They are agriculture, cattle-raising, and the necessary occupations therewith connected. These professions are the most profitable to the neighbors and cause them the least trouble. Every man should encourage his child to enter these professions because children should be encouraged to enter the best profession, and the best profession is the one which brings most profit to neighbors.
But nowadays most men want their children to become clergymen. In the present circumstances, this means to lead a child into the most dangerous and godless position. The rest of men wish their children to become businessmen always with the idea that they would become rich without working, against the commandment of God, and with the idea that they will seek their own profit while exploiting and ruining others, against the divine order and the whole Christian spirit. Encouraging youth to enter that road is leaving them to eternal death, while the path to eternal life is only through keeping the divine commandments. And all commandments will be fulfilled in the single injunction of brotherly love, which always seeks the interest of the neighbor and not its own.