What makes someone good or bad, philosophically speaking?

Ethics. The ultimate branch of philosophy that deals with morality and everything

intertwined with it. In her article “Saints, heroes, sages, and villains”, Julia Markovits thoroughly discusses how complicated moral goodness and evil can be. Knowing it will strengthen the objectivity and authenticity of our judgment.

Markovits, Julia. “Saints, heroes, sages, and villains.” Philosophical Studies: An International Journal for Philosophy in the Analytic Tradition, vol. 158, no. 2, 2012, pp. 289-311.