When there is a Rebbe, there are Chassidim
One who is [by name] a Chassid but is not a Chassid – this causes the Rebbe to not be a Rebbe. The Alter Rebbe was a Rebbe, so he made Chassidim. And the Chassidim, by being Chassidim and by being accomplished in the realm of the service of the heart [prayer] – they gave strength to the Rebbe.”