Pyrrhonism (a school of philosophical skepticism founded by Pyrrho) "It is one's opinions about non-evident matters (i.e., dogma) that prevent one from attaining eudaimonia." The main principle of Pyrrhonism is expressed by the word acatalepsia, which connotes the ability to withhold assent from doctrines regarding the truth of things in their own nature; against every statement its contradiction may be advanced with equal justification. Pyrrhonists argue that dogmatists, such as the Stoics, Epicureans, and Peripatetics, have failed to demonstrate that their doctrines regarding non-evident matters are true.
Sophist Since the times of Homer it commonly referred to an expert in his profession or craft. Charioteers, sculptors, or military experts could be referred to as sophoi in their occupations. The word has gradually come to connote general wisdom and especially wisdom in human affairs such as politics, ethics, and household management. The early sophists charged money in exchange for education and providing wisdom, and so were typically employed by wealthy people. This practice resulted in the condemnations made by Socrates through Plato in his dialogues, as well as by Xenophon in his Memorabilia and, somewhat controversially, by Aristotle. As a paid tutor to Alexander the Great, Aristotle could be accused of being a sophist.