1. This passage discusses Plato's later works from his "old age" period, including the Timaeus, the incomplete Critias, and the Laws. 2. In the Timaeus and Critias dialogues, Socrates converses with a Pythagorean who details Pythagorean mathematical and biological views that Plato largely agrees with, as Plato was influenced by Pythagoreans he visited and hosted in southern Italy late in life. 3. The incomplete Critias dialogue focuses on history, while the lengthy Laws restates Plato's views on the ideal state. The Laws is also unique as the only Platonic dialogue not featuring Socrates.