He is encouraged to marry a wealthy heiress, despite promising to marry Sonya, his cousin. The bits that interest you personally and the bits that you find of only abstract curiosity are going to change when you read the book at 20, and again at He becomes anonymous in all the chaos, shedding his responsibilities by wearing peasant clothes and shunning his duties and lifestyle.
The 19th-century Great Man Theory claims that historical events are the result of the actions of "heroes" and other great individuals; Tolstoy argues that this is impossible because of how rarely these actions result in great historical events.
You know how looking at a math problem similar to the one you're stuck on can help you get unstuck? Educated abroad, Pierre returns to Russia as a misfit. Educated abroad at his father's expense following his mother's death, Pierre is kindhearted but socially awkward, and finds it difficult to integrate into Petersburg society.
On the opposite front, the conservative press and "patriotic" authors A. They saw its major fault as the "author's inability to portray a new kind of revolutionary intelligentsia in his novel", as critic Varfolomey Zaytsev put it.
The Russians, however, have won a moral victory by standing up to Napoleon's reputedly invincible army. Pierre is interested in panentheism and the possibility of an afterlife. An obvious example is the way he handles Pierre's initiation into the masons and his light treatment of Pierre's methods to better the lot of his peasants.
There are other subjects in the novel, too.
Andrei recovers from his near-fatal wound in a military hospital and returns home, only to find his wife Lise dying in childbirth.