Voltaire's Treatise on Toleration is a philosophical work published in 1763 that advocates for religious tolerance and freedom of belief, challenging the dogmatic authority of established religions. The treatise reflects Enlightenment ideals, emphasizing reason, individual rights, and the importance of coexistence among different faiths. Voltaire's arguments were a call to reject fanaticism and embrace rational discourse, which were essential elements of the broader Enlightenment movement.