I did not invent the proposition that governments derive their just powers from the consent of the governed and that men hold natural rights to life and liberty. John Locke wrote it. I read it carefully, agreed with it completely, and put it in the Declaration. The genius of 1776 was not novelty — it was courage: the courage to act on what the best...
The state of nature has a law of nature to govern it, which obliges every one: and reason, which is that law, teaches all mankind, who will but consult it, that being all equal and independent, no one ought to harm...
— Second Treatise of Civil Government, Chapter II §6 (1689)
— Letter to Henry Lee, 8 May 1825
Enlightenment