Summary
Seneca advises that individuals should not be deceived or swayed by the changing fortunes of life. He argues that those who remain modest and grounded during periods of success are less likely to be devastated when circumstances change. The true test of strength and resilience is not only enduring hardship but also maintaining one’s stability and rationality during times of prosperity.

Interpretation
In practical terms, this means avoiding overconfidence and arrogance during good times, as these attitudes can lead to a greater fall when fortunes shift. For someone familiar with Stoic teachings, this emphasizes the importance of consistent self-control and humility. By maintaining a steady and rational mindset regardless of external success or failure, we can better handle life’s inevitable ups and downs. This approach encourages us to build inner strength that is unaffected by changing circumstances, ensuring that our peace and stability remain intact regardless of what happens.