Surak was a legendary Vulcan philosopher, scientist, and logician, considered the greatest of all who ever lived on Vulcan and the father of the modern Vulcan civilization. (TOS: "The Savage Curtain")
Surak lived in the 4th century, during the Time of Awakening. (ENT: "The Forge") As a scientist, he was considered on the same level as Albert Einstein and Isaac Newton. (Star Trek II: The Wrath of Khan)
Surak walked in Vulcan's Forge, beginning in the Gateway and crossing the Plain of Blood. His logic was said to have cooled it from the heat of battle. It was here that he founded the T'Karath Sanctuary. (ENT: "The Forge")
Surak told stories of the IDIC. He stated that the IDIC "had no end," and that its name was only a shadow of its true meaning. He was also an active mind melder. (ENT: "The Forge")
Surak's followers included T'Klaas, one of the first Kolinahr masters. (ENT: "Awakening")
During the Time of Awakening, Vulcan suffered from a series of devastating wars, which nearly destroyed the planet. In the early stages of what was to be another devastating war, Surak's followers sent emissaries to propose peace. Many of these emissaries were killed, but over time they achieved peace on their planet. (TOS: "The Savage Curtain")
Surak was killed in the last battle against "those who marched beneath the raptor's wings." (ENT: "The Forge") He died on Mount Seleya from radiation sickness caused by atomic weapons. (ENT: "Awakening")
