Who is The Canopeans from Shikasta: Re, Colonised Planet 5: Personal, Psychological, Historical... and what is their importance?

The Canopeans espouse a philosophy of love, harmony and fellow-feeling that they attempt to spread amongst the planets in their empire by way of a "Lock" that syncs up the Planet's energy flows. They consider themselves "the children of the Purpose" which appears to be to bring everyone willing into a non-violent unity where they share love and energy, specifically through a common SOWF flow.