Full Idea
There must be a uniform experience against every miraculous event, otherwise the event would not merit that appellation.
Gist of Idea
All experience must be against a supposed miracle, or it wouldn't be called 'a miracle'
Source
David Hume (Enquiry Conc Human Understanding [1748], X.I.90)
Book Reference
Hume,David: 'Enquiries Conc. Human Understanding, Morals', ed/tr. Selby-Bigge/Nidditch [OUP 1975], p.115