Having thus accounted in the best way he could for the existence of all that relates to the beings in the three worlds, our author fondly dwells on the benefits that accrue from the knowledge of causes. It dissipates all the doubts that had previously darkened the mind; it quiets all the anxieties of the heart, and affords perfect peace. For want of it, the impious fall from one error into another; the disciples of Buddha are chiefly perfected by its help. We read in the Buddhist scriptures that a Brahmin went to consult Buddha on some points that much perplexed his mind. He said to him, “I am beset with doubts respecting the past, the present, and the future. Respecting the past, I ask myself, Have I passed through former generations or not? What was my condition during those existences? My answer is, I am ignorant on all those points. What was my position previous to those generations? I know it not. As to the present, is it true that I exist? or is my existence but an illusion? Shall I have to be born again or not? What are those living beings that surround me at present? Are they but so many illusions which deceive me by their appearance of reality? On these points I am sunk in complete ignorance. The future is likewise full of doubts and most perplexing uncertainties. Shall I have other generations or not? What shall be my condition during these coming existences? A thick veil hides from my eyes all that concerns my future destiny. What are the means to clear up all those doubts that encompass me on all sides?”