Set against the tumultuous backdrop of the Russian Revolution, the book follows the life of a physician and poet, Yuri Zhivago, as he navigates the political and social upheaval of the early 20th century. Torn between his love for two women, his wife Tonya and his passionate mistress Lara, Zhivago's personal struggles mirror the larger societal changes occurring around him. The novel explores themes of love, war, and the human spirit, offering a poignant and complex portrait of life during a time of revolutionary change.

"Conditioned Reflexes" is a groundbreaking work that delves into the study of behaviorism and the concept of classical conditioning. The author, a renowned physiologist, presents his findings on how an organism's responses can be triggered or conditioned by external stimuli, using his famous experiments with dogs as a prime example. The book significantly influenced the field of psychology and laid the foundation for future studies on learning and behavior.