A "sin" is something which is not necessary.
-- G. I. Gurdjieff
   
G. I. Gurdjieff   Name:
G. I. Gurdjieff
Type:
Educator
Nationality:
Russian
Birth:
January 13, 1872
Death:
October 29, 1949
https://www.nutquote.com/quote/G._I._Gurdjieff