We have all sometimes felt that we were not treated as we deserved – that we were misunderstood, mocked, wronged. And some of those times, other people may have felt that we treated them just as unfairly. How to Do the Right Thing draws from the principles of ancient Stoicism, as shaped by the Roman politician and philosopher Seneca, to help us tackle one of the most serious practical questions of everyday life: how to treat others – and ourselves – correctly. Starting from the virtue of magnanimity, the book gathers lessons from Seneca's writings that emphasize the importance of a calm and clear mind, self-criticism before exercising criticism, seeking mitigating circumstances, and being lenient, ultimately showing the way to achieve not just better coexistence with those around us but true happiness. People who consider only themselves and modify everything for their own benefit cannot live the best human life: you must live for others if you want to live for yourself. If carefully and faithfully observed, this principle makes us all companions with each other and establishes a common standard of justice for humanity.