The usual definitions are :
Interested in the good of humanity; seeks to improve the condition of man.
Larousse
Having the concern or purpose of promoting the good of human beings.
Oxford Dictionary
Aiming at the good of man, respect for human rights.
Dictionarywithout agent
Said of certain people, certain opinions, certain doctrines that aim at the universal good of humanity.
Wiktionnaire, Ptidico.com
Concerning humanity.
Concerning the relief of suffering humanity, coming to the aid of men in need or distress.
Trésor de la langue française – dictionnaire du XIXe & XXe siècle.