Definition: exercising a disposition to advance the interest of the community; inclined to make private sacrifices for the public good

• Respond to every call that excites your spirit. — Jalāl al-Dīn Muḥammad Rumi (1207–1273) Persian Sufi poet
• It is my deepest belief that only by giving our lives do we find life. I am convinced that the truest act of courage, the strongest act of manliness is to sacrifice ourselves for others in a totally non-violent struggle for justice. — Cesario EstradaCesar” Chavez (1927–1993) American labor & civil right leader

Suggestion: Give blood. For just the small price of time and a little prick, you can be of service to someone in a whole lot of pain.