Professor Salazar Slytherin was a pure-blood wizard of medieval times. He was a Parselmouth (a wizard with the rare ability to speak with snakes) and skilled at Legilimency. He was one of the four founders of Hogwarts School of Witchcraft and Wizardry and the former best friend of Godric Gryffindor, a fellow founder.
☀He mistrusted Muggle-born students to the point of proposing that they should not be accepted at Hogwarts. However, when he expressed his opinion to the other Hogwarts founders, they did not agree with him. In response, he left the school, never to return. Slytherin died sometime after creating the Chamber of Secrets, concealing a basilisk, ready to have the Chamber reopened to purge the school of those who, in Slytherin's view, were unworthy to study magic.
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