The Selfish Gene should be read by everyone who studies biology or life science. Modern biological sciences are underlied by an understanding of evolution an genetics. I had heard variants of the phrase "change in allele frequency in a population over time," as a description of evolution many times starting in high school. But it wasn't until I read The Selfish Gene in college that I really understood what this meant…
https://www.amazon.com/Bacteria-Bach-Back-Evolution-Minds/dp...
The author (a philosopher informed by scientific theories, writing on the subject for many decades) weaves together the grand story explaining biological evolution, evolution of minds, evolution of culture, and more (explaining how memes are a very useful concept to understand the tremendous non-biological changes over the course of the history of life).