Who is idea did Thomas Jefferson draw upon while drafting the declaration of dependence?

Thomas Jefferson drew heavily upon the ideas of Enlightenment thinkers, particularly john Locke. Locke's concepts of natural rights, including life, liberty, and property, greatly influenced Jefferson's articulation of inalienable rights in the Declaration of Independence. Jefferson's emphasis on the social contract and the right of the people to alter or abolish a government that does not protect their rights reflects Locke's philosophy.