" How little is requisite to supply the necessities of nature? And in a view to pleasure, what comparison between the unbought satisfaction of conversation, society, study, even health and the common beauties of nature, but above all the peaceful reflection on one's own conduct: What comparison, I say, between these, and the feverish, empty amusements of luxury and expense? These natural pleasures, indeed, are really without price; both because they are below all price in their attainment, an above it in their enjoyment. "

― David Hume , An Enquiry Concerning the Principles of Morals