A libertine is a person devoid of most moral principles, a sense of responsibility, or sexual restraints, which they see as unnecessary or undesirable, and is especially someone who ignores or even spurns accepted morals and forms of behaviour observed by the larger society. Libertinism is described as an extreme form of hedonism. Libertines put value on physical pleasures, meaning those experienced through the senses. As a philosophy, libertinism gained new-found adherents in the 17th, 18th, and 19th centuries, particularly in France and Great Britain. Notable among these were John Wilmot, 2nd Earl of Rochester, and the Marquis de Sade.
The word libertine was originally coined by John Calvin to negatively describe opponents of his policies in Geneva, Switzerland. The group, led by Ami Perrin, argued against Calvin's "insistence that church discipline should be enforced uniformly against all members of Genevan society". Perrin and his allies were elected to the town council in 1548, and "broadened their support base in Geneva by stirring up resentment among the older inhabitants against the increasing number of religious refugees who were fleeing France in even greater numbers". By 1555, Calvinists were firmly in place on the Genevan town council, so the Libertines, led by Perrin, responded with an "attempted coup against the government and called for the massacre of the French. This was the last great political challenge Calvin had to face in Geneva". In England, some Lollards held libertine views such as that adultery and fornication were not sin, or that "whoever died in faith would be saved irrespective of his way of life".
During the 18th and 19th centuries, the term became more associated with debauchery. Charles-Maurice de Talleyrand wrote that Joseph Bonaparte "sought only life's pleasures and easy access to libertinism" while on the throne of Naples.
Les Liaisons dangereuses (Dangerous Liaisons, 1782), an epistolary novel by Pierre Choderlos de Laclos, is a trenchant description of sexual libertinism.