Full Idea
The essence of a thing is only an opinion about the 'thing'.
Gist of Idea
The essence of a thing is only an opinion about the 'thing'
Source
Friedrich Nietzsche (Writings from Late Notebooks [1887], 02[150])
Book Reference
Nietzsche,Friedrich: 'Writings from the Late Notebooks', ed/tr. Bittner,Rüdiger [CUP 2003], p.90
A Reaction
Nietzsche seems sympathetic to essentialism about natural laws (based on 'power'), but this is the classic rejection of Aristotelian essences, because they are unknowable or unprovable. Personally I think scientists are revealing essences.