Full Idea
Belief, where it reaches beyond the memory or senses, arises from resemblance, contiguity or causation, with the same transition of thought and vivacity of conception.
Gist of Idea
Beliefs are built up by resemblance, contiguity and causation
Source
David Hume (Enquiry Conc Human Understanding [1748], V.II.44)
Book Reference
Hume,David: 'Enquiries Conc. Human Understanding, Morals', ed/tr. Selby-Bigge/Nidditch [OUP 1975], p.54