The text talks about various examples and instances that depict using "day and night" as a significant gesture or element. These include art pieces, discussions, and even the burning question on whether a strong force can put an end to the chaos and turmoil experienced constantly. The idea of constant change and transformation, similar to a snake shedding its skin, is also brought up. A common theme in these examples is the notion of creating something meaningful, whether it be through art or activism, while also dealing with the struggles and complexities of life. Additionally, the text mentions the concept of Dadaism, a form of artistic anarchy that emerged from a disgust for societal conventions. Overall, the constant presence and use of "day and night" reflects the never-ending pursuit of beauty and meaningful creation.