John Adams, by David McCullough (2001) at 450, “‘[t]he earth belongs in usufruct to the living'”, —[Quoting Thomas Jefferson to James Madison, “[It’s] self-evident.”].

https://johnrubens.wordpress.com/2016/09/22/thomasjefferson-secretary-of-state-1793-debtsdiewithitsgeneration-you-want-to-fight-every-generation-with-blood-thomas-the-social-compact-must-be-reduced-to-writing-so-it-can-survive-the-generat