2018 Humanae vitae 50th anniversary academic symposium: speaker, J Budziszewski, PhD, April 5

 https://www.youtube.com/watch?v=jMDECBaR5wM&list=PLpTzvCOJa7DBK9w1btMeiKDbbGUNRGS0j&index=7

https://www.undergroundthomist.org/a-view-of-marriage

https://www.mercatornet.com/thomas-aquinas-on-marriage-fruitfulness-and-faithful-love#:~:text=%E2%80%9CHence%20it%20is%20of%20natural,live%20together%20for%20ever%20inseparably.%E2%80%9D