When a man desires anything inordinately, he is at once unquiet in himself... There is, therefore, no peace .. in the heart of a man who gives himself all to outward things. But in the heart of spiritual men and women who have their delight in God great peace and inward quiet are found.
(p. 37-38)
Remember how dry and how undevout you are without Jesus, and how unwise, how vain, and how ignorant you are when you desire anything but Jesus. Truly, such a desire is more harmful to you than if you had lost all the world. What can this world give you save through the help of Jesus? To be without Jesus is the pain of hell. And to be with Him is a pleasant paradise.
(p. 85)
(Said to God:) There is nothing created that can fully satisfy my desires. Make me one with You in a sure bond of heavenly love, for You alone are sufficient to Your lover, and without You all things are vain and of no substance.
(p. 141)
All earthly joy begins pleasantly, but at the end it gnaws and kills.
(p. 57)