Again, this is Puritanism with a Catholic veneer. You can always recognize it by the primary idea: that sex is something bad, something dirty, something to be avoided for its own sake. On the contrary, sex in itself is something GOOD, having been created by a perfect God. He designed it. It is good and beautiful. It is only the devil's warping of marital love into selfish lust, promiscuity, and other degradations (ɧoɱosɛҳųαƖity, etc.) that is evil.

• In the human body the organs that are the most shameful are those that are used to discharge the filth produced by the body; they are the penis, the vagina and the anus. The last is more shameful than the first two because it discharges solid detritus, while the others discharge liquid detritus, but these organs also are disgusting and shameful. Now then, the male and female sɛҳuąƖ functions are put into practice by these shameful organs. Therefore, it is undeniable that they share something of the same disgusting character of their other function.
• Even though the function of reproduction is much nobler than the function of eliminating the impurities of the body, there is a universally accepted association of those functions and, consequently, a natural psychological repulsion to view these organs.
• The repugnance for the exposition of these organs – either when they are in action or not – is universal among civilized people. Even among primitive and pagan people these organs are normally covered by clothing. To reach the point of boldly exhibiting these organs in public, a person or a group needs to have reached a great degree of moral degradation by losing any reserve of pudor or shame.
• The fact that the sɛҳuąƖ organs trigger the process of concupiscence and as such become greatly attractive – either in marriage or outside of it – does not nullify the normal repulsion they raise. So then, reactions of both shame and attraction are present regarding these organs.
• As it is known, regarding sɛҳuąƖ activity outside of marriage, the Church has two Commandments – 6^th and 9^th – that oblige Catholics not to engage in it, either in thought or deed. Regarding the licit sɛҳuąƖ activity inside marriage, there are also precise rules to control concupiscence and avoid lust.
• Reinforcing this general moral, psychological and hygienic reserve regarding the sɛҳuąƖ organs, the Church has always recommended modesty in dress, prohibiting even the remote exhibition of these organs, which she wisely calls pudenda pars (shameful parts). Morally speaking, the pudenda pars include the three mentioned organs plus the female breasts, whose exposition also ignite concupiscence in men and induce them to lust.
• Therefore, we see that the sɛҳuąƖ organs are tainted with the shame proper to the function of eliminating human waste, which is another function they have parallel to that of procreation. Consequently, the marital act shares an analogous repulsion.

• Confirming the general sentiment of shame regarding the sɛҳuąƖ act – either inside or outside of marriage – here, I offer the reader an in-depth explanation of the first instinctive reactions of dishonor and indignity that man has to the marital act, which invite him to refrain from it and, collaterally, oblige it to take place in the secrecy of the private life.