Full Idea
All reasonings concerning matters of fact seem to be founded on the relation of cause and effect. By means of that relation alone we can go beyond of our memory and senses.
Gist of Idea
All reasoning about facts is causal; nothing else goes beyond memory and senses
Source
David Hume (Enquiry Conc Human Understanding [1748], IV.I.22)
Book Reference
Hume,David: 'Enquiries Conc. Human Understanding, Morals', ed/tr. Selby-Bigge/Nidditch [OUP 1975], p.26