"I began with some philosophical treatise, such as the Logic of Port-Royal, Locke’s Essay, Malebranche, Leibnitz, Descartes, &c. I soon observed that all these authors nearly always contradicted each other, and I conceived the fanciful idea of reconciling them, which fatigued me greatly, and made me lose considerable time. I muddled my head without making any progress. At last, abandoning this plan, I adopted one that was infinitely better, to which I attribute all the progress which, in spite of my want of talent, I may have made; for it is certain that I never had much capacity for study. As I read each author, I made a practice of adopting and following up all his ideas, without any admixture of my own or of those of anyone else, and without ever attempting to argue with him."