St. Catherine of Siena recommended perpetual continence ("angelic continence" or spiritual marriage ) to at least two married couples: 1. Giovanni Trenta of Lucca & Monna Tora of Lucca in 1376 (*Letters* vol. 2, pp. 51-4) 2. Ristoro Canigiani & Alessandra (Sandra) Quaratesi in 1378 (*Letters* vol. 3, pp. 209-12) Did other saints recommend perpetual continence to married couples? cf. "Do married couples need to live sexually? "

Where did St. Catherine of Siena say "Nothing great is ever achieved without much enduring. "?

I'm not sure about the book's title also. Here is a link to where you can get a PDF (it's public domain), where it's referred to as "Dialog of Catherine of Siena", but I've seen several alternatives. I've looked on Google and in the introduction to the book itself but I'm just finding dates related to her life. I want to know when people were first exposed to "Dialog", and what kind of medium was used.

Where did St. Catherine of Siena say: “Preach the Truth as if you had a million voices. It is silence that kills the world.”? quoted in this article