Saint Francis de Sales 
Treatise on the Love of God [EPUB ebook] 

This Treatise which I now present you, may be in some way serviceable to you, and that in it you will meet with many wholesome considerations which you would not elsewhere so easily find. We all look towards the glory of holy love. my intention is only to represent simply and naively, without art, still more without false colors, the history of the birth, progress, decay, operations, properties, advantages and excellences of divine love. This Treatise then is made for a soul already devout that she may be able to advance in her design, and hence I have been forced to say many things somewhat unknown to the generality, and which will therefore appear more obscure than they are. My purpose here is to speak to souls that are advanced in devotion.