Elihu Palmer(1764-1806) was an American deist philosopher. Originally trained as a Presbyterian minister, he rejected that religion and created the Deistical Society in New York City in 1796. In 1801, he published his major work, Principles of Nature; or, a Development of the Moral Causes of Happiness and Misery Among the Human Species, and sent a copy to Thomas Jefferson in 1802. No reply from Jefferson has been found. Jefferson's copy of this work is still at the Library of Congress.