For a man to conquer himself is the first and noblest of all victories... The first and greatest victory is to conquer yourself; to be conquered by yourself is of all things most shameful and vile.
I do not deny that many appear to have succeeded in a material way by cutting corners and by manipulating associates, both in their professional and in their personal lives. But material success is possible in this world and far more satisfying when it comes without exploiting others.