Why Would Thoreau Use An Allusion To The Spartan

Throughout the passage allusions are used to say that people should not stress over the little things in life. That is to say, in the passage in the first paragraph Thoreau throws a historical allusion to the times of the Spartan's and using it as a simile also in the passage. I think this allusion wants the people to imply on that people shouldn't always stress on everything. The author gives us this piece to have an allusion on which we should be like Spartans and live indifferently to not stress over everything in life. To enumerate, in the second paragraph there is an allusion to Greek myths . This allusion shows the fable over the ants in Greek mythology stating that we shouldn't be battling over every little thing like these ants did over all the "wretchedness".
In the following advertisement above it shows a programming software advertisement on how making a program can be more straightforward to remove all the stress from doing it if you buy this product. This connects to the theme because, it's showing the idea of rather using something else to make it simple and not have to stress over those little kinks in a program to make it perfect that may cause an error; that's how the ad connects to the theme. It connects to what the allusion is on that if you do so as the ants did and go through all the wretchedness, you can reach the same destination with a less stressful way. Throughout the passage the author uses rhetorical devices to imply that people shouldn't stress so much on the little things life has to throw at