Rene Descartes Jul 6, 2001 / Comment / 688 views / / Favorite 1To train ourselves in sagacity we should exercise our mental powers on those questions which have already been solved by others… Content: Quotation Source: The Key Reporter (Phi Beta Kappa) Subjects: Intelligence, PhilosophyLike this content? Why not share it?Post navigation← Previous postPrepaid Telephone Service MarketNext post →Hostile takeovers: the ins and outsMore Related PostsDick MartinHenry Willard AustinDaniel GolemanBruce NixonAlbert EinsteinLeave a Reply Cancel replyYour email address will not be published. Required fields are marked *CommentName * Email * Notify me of followup comments via e-mail. You can also subscribe without commenting. Receive a monthly newsletter of new content added (no spam) This site uses Akismet to reduce spam. Learn how your comment data is processed.