To appear and to be

If you wish to make progress, then be content to appear senseless and foolish in externals, do not make it your wish to give the appearance of knowing anything; and if some people think you to be an important personage, distrust yourself. For be assured that it is no easy matter to keep your moral purpose in a state of conformity with nature, and, at the same time, to keep externals; but the man who devotes his attention to one of these two things must inevitably neglect the other.