Indeed every monad must be different from every other. For there are never in nature two beings, which are precisely alike, and in which it is not possible to find some difference which is internal, or based on some intrinsic quality.
-- Gottfried Leibniz
   
Gottfried Leibniz   Name:
Gottfried Leibniz
Type:
Philosopher
Nationality:
German
https://www.nutquote.com/quote/Gottfried_Leibniz