Gottfried Leibniz (1646-1716)
“To suppose two things indiscernible is to suppose the same thing under two names.”
- From Leibniz’s Letters To Clark (Fourth Paper, section 6), translated by G. H. R. Parkinson and Mary Morris (Everyman’s Library, 1934). Image of Liebniz photographed by Ad Meskens and licensed under Creative Commons 3.0 (CC 3.0).