- "My dear Wormwood, the contemptuous way in which you spoke of gluttony as a means of catching souls, in your last letter, shows only your ignorance. One of the great achievements of the last hundred years has been to deaden the human conscience on that subject, so that by now you will hardly find a sermon preached or a conscience troubled about it in the whole length and breadth of Europe."

Lewis has a section in the book where Screwtape is advising Wormwood how to create in his subject feelings of personal injury, based on the sense that a legitimate claim (what we would call our "rights") has been denied. The example he gives is time:
- "Now you will have noticed that nothing throws him into a passion so easily as to find a tract of time which he reckoned on having at his own disposal unexpectedly taken from him. It is the unexpected visitor (when he looked forward to a quiet evening), or the friend's talkative wife (turning up when he looked forward to a tete-a-tete with the friend), that throws him out of gear... They anger him because he regards his time as his own and feels that it is being stolen. You must therefore zealously guard in his mind the curious assumption 'My time is my own.'... The assumption which you want him to go on making is so absurd that, if once it is questioned, even we cannot find a shred of argument in its defense. The man can neither make, nor retain, one moment of time; it all comes to him by pure gift.... He is also, in theory, committed to a total service of the Enemy; and if the Enemy appeared to him in bodily form and demanded that total service for even one day, he would not refuse. He would be greatly relieved if that one day involved nothing harder than listening to the conversation of a foolish woman and he would be relieved almost to the pitch of disappointment if for one half-hour in that day the Enemy said, 'Now you may go and amuse yourself.'"
When I read that I realized with a pang how often I assume my time belongs to ME. My life is heavily scheduled with work and school and family, so when I find some free "tracts of time" I covet them and consider them my own. It is easy for me to deeply resent any interruption of these by the demands of other people, especially people who just want (or need) to chit-chat when I just want to do whatever I want to do. Often it's not even because I have something I really need to do, or anything important. I just want to have that time to "amuse myself."
I confess that I am hungry for free time, and not a little jealous of those who are retired and have more unstructured time than I do. But Lewis rightly points out that no one's time is their own - none of us created it, and as Christians it ALL belongs to God. It does me good to remember that every moment of every day is a gift, and the people who make demands on my time (even little demands, like an extra fifteen minutes after church to talk about inconsequential things when I am ready to go home) give me opportunities to share God's grace and demonstrate the truth of my commitment in "total service" to Christ.