„The Three Greatest Men”. Library of Congress. Приступљено 13. 6. 2009. „Jefferson identified Bacon, Locke, and Newton as "the three greatest men that have ever lived, without any exception". Their works in the physical and moral sciences were instrumental in Jefferson's education and world view.”
Jefferson, Thomas. „The Letters: 1743–1826 Bacon, Locke, and Newton”. Архивирано из оригинала 31. 12. 2009. г. Приступљено 13. 6. 2009. „Bacon, Locke and Newton, whose pictures I will trouble you to have copied for me: and as I consider them as the three greatest men that have ever lived, without any exception, and as having laid the foundation of those superstructures which have been raised in the Physical & Moral sciences.”
stanford.edu
plato.stanford.edu
„John Locke”. The Stanford Encyclopedia of Philosophy. Metaphysics Research Lab, Stanford University. 2022.
Jefferson, Thomas. „The Letters: 1743–1826 Bacon, Locke, and Newton”. Архивирано из оригинала 31. 12. 2009. г. Приступљено 13. 6. 2009. „Bacon, Locke and Newton, whose pictures I will trouble you to have copied for me: and as I consider them as the three greatest men that have ever lived, without any exception, and as having laid the foundation of those superstructures which have been raised in the Physical & Moral sciences.”
