Book 7 of Meditations by Marcus Aurelius focuses on Stoic themes like living in harmony with nature, accepting the impermanence of life, and the importance of rationality.
Marcus considers valuable things such as how little is necessary to living a happy life, what the perfection of moral character looks like, and how the more you dig for good within yourself the more it will bubble up.
The chapter is a reminder to align actions with reason and find peace within oneself through disciplined living.