In an essay in The Weight of Glory, C.S. Lewis wrote: “the sun looks down on nothing half so good as a household laughing together over a meal, or two friends talking over a pint of beer, or a man alone reading a book that interests him.” As we celebrate Memorial Day here in the United States, I pray you can enjoy what matters most to you and give thanks for others who sacrificed to made it possible.
In the same essay, Lewis says “all economies, politics, laws, armies, and institutions, save insofar as they prolong and multiply such scenes, are a mere ploughing the sand and sowing the ocean.” These cannot deliver our salvation, yet they are absolutely necessary in this life. These institutions have “no higher end than to facilitate and safeguard the family, and friendship, and solitude.” Therefore, give thanks whenever peace and fellowship are possible, and pray for those living in places where they are not.
The essay also includes this quote: “do not let us mistake necessary evils for good.” What did Lewis mean? That when things that exist to provide “family, and friendship, and solitude” become an end in themselves “what was undertaken for the sake of health has become itself a new and deadly disease.” While these things are absolutely needed, we should think of them “only in order to be able to think of something else.” On the other hand, “a sick society must think much about politics.” Therefore, give thanks for those who faithfully serve, and for preservation of the freedoms you enjoy.
Most importantly on Memorial Day, give thanks for those who gave up their lives so those they left behind could enjoy “family, and friendship, and solitude.” Without their sacrifice, we could not celebrate Memorial Day, or any other day. “Great sacrifices of this private happiness by those who have it may be necessary in order that it may be more widely distributed.”
Jesus said: “Greater love has no one than this, that someone lay down his life for his friends.” (John 15:13) As He gave His life for you, pray also for the ability, willingness, and freedom to sacrifice your own time and talents for others.
 Lewis, C.S. The Weight of Glory (1941). P. 161-162.