Charles-Irénée Castel de Saint-Pierre

Charles-Irénée Castel, abbé de Saint-Pierre (18 February 1658 – 29 April 1743) was a French author whose ideas were novel for his times. His proposal of an international organisation to maintain peace was perhaps the first in history, with the possible exception of George of Poděbrady's Tractatus (1462–1464). He influenced Rousseau and Kant.

Saint-Pierre was born at the château of Saint-Pierre-Église near Cherbourg, where his father, the Marquis de Saint-Pierre, was grand bailli of Cotentin. He was educated by the Jesuits. The youngest of five children and unsuited to a military career owing to poor health, he became a priest.

He was introduced by family connections into the salons of Madame de la Fayette and the Marquise de Lambert in Paris. He was elected to the Académie française in 1695, although he had previously produced no notable work; his election was an episode in the Quarrel of the Ancients and the Moderns, Saint-Pierre being a clear representative of the latter. The same year he gained a footing at court as chaplain to Madame, the king's sister-in-law. From 1703 to his death, he was abbot of Tiron.

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