Cassirer؛ Kristeller؛ Randall، المحررون (1948). "Introduction". The Renaissance Philosophy of Man. University of Chicago Press. مؤرشف من الأصل في 2021-08-16.
Lennox، James (27 يوليو 2011). "Aristotle's Biology". Stanford Encyclopedia of Philosophy. Stanford University. مؤرشف من الأصل في 2019-05-07. اطلع عليه بتاريخ 2014-11-28.
"Contractarianism". Stanford Encyclopedia of Philosophy.: "Contractarianism […] stems from the Hobbesian line of social contract thought"
"Hobbes: Moral and Political Philosophy". Internet Encyclopedia of Philosophy. "Hobbes is the founding father of modern political philosophy. Directly or indirectly, he has set the terms of debate about the fundamentals of political life right into our own times."
Lennox، James (27 يوليو 2011). "Aristotle's Biology". Stanford Encyclopedia of Philosophy. Stanford University. مؤرشف من الأصل في 2019-05-07. اطلع عليه بتاريخ 2014-11-28.
Cassirer؛ Kristeller؛ Randall، المحررون (1948). "Introduction". The Renaissance Philosophy of Man. University of Chicago Press. مؤرشف من الأصل في 2021-08-16.