Books come at my call and return when I desire them; they are never out of humor and they answer all my questions with readiness. Some present in review before me the events of past ages; others reveal to me the secrets of Nature. These teach me how to live, and those how to die; these dispel my melancholy by their mirth, and amuse me by their sallies of wit. Some there are who prepare my soul to suffer everything, to desire nothing, and to become thoroughly acquainted with itself. In a word, they open the door to all the arts and sciences.
PetrarchAnd men go about to wonder at the heights of the mountains, and the mighty waves of the sea, and the wide sweep of rivers, and the circuit of the ocean, and the revolution of the stars, but themselves they consider not.
PetrarchContinued work and application form my soul's nourishment. So soon as I commenced to rest and relax I should cease to live.
PetrarchEach famous author of antiquity whom I recover places a new offence and another cause of dishonor to the charge of earlier generations, who, not satisfied with their own disgraceful barrenness, permitted the fruit of other minds, and the writings that their ancestors had produced by toil and application, to perish through insufferable neglect. Although they had nothing of their own to hand down to those who were to come after, they robbed posterity of its ancestral heritage.
Petrarch