One of my favorite references is Srila Prabhupada's concluding words in Caitanya Caritamrta. In it, he has described how he feels that his spiritual master inspired him within the heart to produce these books. Srila Prabhupada emphasized the importance of his books for establishing the basis of this Krishna consciousness movement. And to continue to distribute his books for many generations to come is certainly the mission of those who call themselves his followers.