ABSTRACT
The object seems to philosophical students to be a tree only because they are a specific animal in a specific state and circumstance and because the object is in an equally specific state and circumstance. In response to some sceptical challenges, philosophical teachers have contemplated potential ways to understand how beliefs can be justified or qualify as knowledge. From different perspectives, things seem different. Taking its name from Pyrrho, an ancient Greek philosopher, Pyrrhonism aims to divest philosophical students of all beliefs as to what is true in the world. If a Pyrrhonist has his way, philosophical students will retain no substantial beliefs. By losing beliefs as to how things really are, philosophical students achieve an intellectual quietude, a kind of tranquillity. One person's, or animal's, perspective is accurate only if all other people, and all other animals, with their various perspectives, agree, or cohere, with it.
