Date: 1748, 1777

"They know, that a human body is a mighty complicated machine: That many secret powers lurk in it, which are altogether beyond our comprehension: That to us it must often appear very uncertain in its operations: And that therefore the irregular events, which outwardly discover themselves, can be ...

— Hume, David (1711-1776)

Date: 1748, 1777

"In vain do we hope, that men, from frequent disappointment, will at last abandon such airy sciences, and discover the proper province of human reason."

— Hume, David (1711-1776)

Date: 1748, 1777

"It may, therefore, be a subject worthy of curiosity, to enquire what is the nature of that evidence, which assures us of any real existence and matter of fact, beyond the present testimony of our senses, or the records of our memory."

— Hume, David (1711-1776)

Date: 1748, 1777

"By means of it alone we attain any assurance concerning objects, which are removed from the present testimony of our memory and senses."

— Hume, David (1711-1776)