Letter #26

I thought this chapter to be quite good. It was all about the idea of unselfishness. In it Screwtape compared how men and women take this term to be two different ideas. For women unselfishness means "chiefly taking trouble for others", men on the other hand take it to mean "not giving trouble to others". Thus the sexes are separated in this ideal. A woman also thinks of doing good offices, and a man of respecting other people's rights. Both sexes, however, as Screwtape states know that they must display a degree of charity. Going further in rules, the two sides do as the other would want, ignoring their own feelings.
Screwtape says to his nephew to prevent what the letter has said, is to keep with some degree of mutual falseness. Don't let the sexes know that they are being unselfish toward one another. If they do notice these it will lead to "love", and this is not wanted.

Screwtape Letter 20

I thought it quite amusing how Screwtape was leading Wormwood to help the Patient fall in love. In particular to fall in love with someone who didn't lead him to a helpfully spiritual, happy and fertile marriage. This type of relationship and subsequent marriage would be bad for Screwtape to get the Patient completely. When Screwtape went on to describe how they have had a hand in attraction it was also quite interesting. To make the beard unattractive to females, and how they have changed who men are attracted to. How they are currently drawing the desires of men to things that do not exist.
This chapter just leads you to think about love, and attraction. How the Devil does and could have a hand in these dealings.

Letter #17

I enjoyed this letter. It was amusing how Screwtape spoke of the two different kinds of gluttony. In particular how he spoke of the Patients mother. That she eats small portions, but asks for something that is not presented to her by others. That she makes them go out of their way for what SHE wants. She even goes as far as to send back what the poor waitress has prepared, for a smaller quantity of food. All of this in the end shows how, her stomach dictates her entire life. She only wants what she wants, and for it to be "properly" made. She is never happy.
We too are often like this. Those who are rich, or those who just want everything, are never happy. They never have enough things. Which can easily be seen as an issue the Devil has a hand in.