Frederic's Admiration and Kindness 58 Voltaire's Admiration of the Prussian Monarch 59 Madame Denis left in Paris 60 Ætat. 57. His "Siècle de Louis Quatorze" 60 Umbrage and Jealousies of the King and Poet 61 1751. Offence given by M. de Voltaire to Frederic 63 Maupertuis and the Berlin Academy; Contest respecting the mechanical Principle of the "least Power" 65 La Beaumette and Maupertuis attack M. de Voltaire 66 Voltaire's Satire of "Akakia" against Maupertuis 66 His Reconciliation with Frederic the Great 67 Their mutual Dissatisfaction renewed, and Voltaire takes leave of the Prussian Court 67 He repairs to Leipsic and Saxe Gotha 68 Is arrested at Francfort by Agents of Frederic 69 Voltaire slighted at Lyons by Cardinal du Tencin 71 1755. Ætat. 61. He purchases the Estate of "Les Délices" at Geneva 72 1756. Renews a literary Correspondence with Frederic 73 Despair of that Monarch on a Defeat 73 Fresh Victories of Frederic 74 M. de Voltaire's "Manners and Spirit of Nations" 74 The Publication of "La Pucelle" occasions a against the Poet 75 His Residence in the Genevese Territory becomes perilous 76 1762. Ætat. 68. He purchases the Château de Ferney on the Frontier of France and Geneva, as a Residence affording him Security 76 The "Encyclopédie" 77 A great niece of Corneille received by Voltaire and Madame Denis at Ferney 79 Arrival of the Family of Calas at Ferney 79 1765. Ætat. 71. Voltaire obtains the Reversal of the Condemnation of Jean Calas, and the Restoration of his Family to civil Rights 81 His Exertions in Favour of the Sirven Family 83 Execution of the Chevalier de la Barre at Abbeville, and Indignation of Voltaire at the Spirit of religious Persecution 84 The Jesuits banished from France 87 Persecution of Jansenists and Quietists 87 Bitter Quarrel and Satire between M. de Voltaire and Jean-Jacques Rousseau 88 Security and happy Life of Voltaire at Ferney 88 1766. Ætat. 72.