“ Even his works of learning, written without a trace of pedantry, are remarkable for their lucidity and vividness.
After the Franco-Prussian War Lavisse studied the development of Prussia and wrote Étude sur l’une des origines de la monarchie prussienne, ou la Marche de Brandebourg sous la dynastie ascanienne, which was his thesis for his doctor’s degree in 1875, and Études sur l’histoire de la Prusse (1879) . In connexion with his study of the Holy Roman Empire, and the cause of its decline, he wrote a number of articles which were published in the Revue des Deux Mondes ”

“ He edited the Histoire de France depuis les origines jusqu’à la Révolution (1901– ) , in which he carefully revised the work of his numerous assistants, reserving the greatest part of the reign of Louis XIV. for himself. ”