The leading figures of post-Kantian philosophy—Johann Gottlieb Fichte, F. W. J. Schelling and G. W. F. Hegel—were not respected by Schopenhauer. He argued that they were not philosophers at all, for they lacked "the first requirement of a philosopher, namely a seriousness and honesty of inquiry." Rather, they were merely sophists who, excelling in the art of beguiling the public, pursued their own selfish interests (such as professional advancement within the university system). Diatribes against the vacuity, dishonesty, pomposity, and self-interest of these contemporaries are to be found throughout Schopenhauer's published writings. The following passage is an example: