Page "Romulan" Paragraph 6

Another theory says that Vulcan colonization efforts led to a split, or schism, between factions favoring the school of logic espoused by the philosopher Surak and opposition groups, led by S ' task, which ended up leaving Vulcan.

However, there is no explicit canon evidence that the group which left Vulcan was in rebellion against Surak.

The " Vulcan Soul " Trilogy, written by Josepha Sherman and Susan Shwartz, told the story that it was Surak's idea that some of the Vulcan population should leave their homeworld to find a new home so that the Vulcan race could be preserved due to the endless wars then raging on the homeworld.

( Conversely, the Star Trek: Enterprise episode " Awakening " includes a line from the long-deceased Surak referring to the enemies of logic in his time as " those who marched beneath the raptor's wing ": this would appear to be a reference to the symbol of the Romulan Empire.

) These Vulcans arrived on Romulus and founded what would become the Romulan Star Empire.

This theory is supported by a reference within the Star Trek: Enterprise episode " United ": Senator Vrax refers to Vulcans as " our distant brothers " during the first part of the episode.