David Williams was a Welsh-born political and religious theorist and the founder of the Literary Fund, later the Royal Literary Fund, which helps published British writers in financial difficulties. Williams opened a chapel in Margaret Street in 1776 as an experiment as a form of social worship 'in which all men may join who acknowledge the existence of a supreme intelligence, and the universal obligations of morality' (see his Liturgy on the Universal Principles of Religion and Morality, x-xi). The present work publishes his sermons at the Margaret Street chapel, which was dissolved in 1780 and replaced by a Philosophical Society, whose admission was controlled. Williams went on to express his views in the influential Letters on Political Liberty (1782), Lectures on Political Principals (1789) and Lectures on Education (1789). The work of Williams and other deists influenced religious thinking for the next two centuries.