30.
Don’t make a profession out of discredited occupations. Much less out of delusions, which only bring scorn, not credit. Our whims have founded many sects, and the sensible man must shun them all. There are those with outlandish tastes who espouse everything the wise repudiate; they delight in every peculiarity, and although this makes them widely known, it’s more from ridicule than respect. The circumspect should not draw attention to themselves even in a profession worthy of the wise, much less in ones that make their followers ridiculous. As common disrepute has long identified each of these, they need not be specified here.