It is also well after a few years to reread the very good books which have already done us much good. Life is short: we should be content to read and read again whatever bears the mark of God, and not to lose our time on things that are lifeless and of no value. St. Thomas Aquinas never wearied of rereading the conferences of Cassian. How many souls have gained greatly by often rereading The Imitation! To be profoundly penetrated by one such book is far better than to read all spiritual writers superficially.