During the long hours of solitude and compulsory inaction which he passed in his Spanish prison, he meditated deeply and earnestly on religious subjects; and after his return to France, the conversation of his brother Dandelot, who had already joined the Huguenots, confirmed the bias to the Protestant doctrines, which his own studies and deliberations had created. Coligni now resigned all his appointments and preferments, except the nominal rank of admiral, and retired to his estates, where he passed his time in fervent devotion, and in the enjoyment of the calm happiness of domestic life. But the cry of suffering which rose from his fellow-Protestants, against whom the pernicious influence of the Princes of Lorraine in the French court kindled the fires of persecution throughout France, soon drew him from his blameless and cherished repose. He at first sought to provide for them a refuge from oppression, by founding colonies of French Protestants in America; but his projects proved unsuccessful; and as the tyranny of the violent party among the French Catholics grew more and more alarming, Coligni deemed that both honor and conscience required him to stand openly forward in behalf of his co-religionists.
No class of men ever were more long-suffering, or showed more unwillingness to rise in arms against their domestic tyrants, than the much-calumniated Huguenots of France. When we read the hideous edicts that were promulgated against them, and which were not mere empty threats, but were carried into execution throughout the land with unrelenting and strenuous ferocity, we feel that if ever the right of self-defence can make an appeal to arms justifiable, it was so in their instance. Extermination or apostasy formed the only choice that their rulers offered them. Mackintosh, in his "History of the English Revolution of 1688," has truly termed the question of when subjects are justified in making war on their sovereign, "a tremendous problem." But the same admirable writer has bequeathed to us a full and luminous code of the rules and principles of immutable morality, by which this awful issue must be tried, and no one who is familiar with these principles can hesitate in pronouncing that the war on the part of the French Huguenots was lawful and laudable before God and man.