Whether this kind of friendship is a part of justice?

Objections

Objection 1 : It seems that this kind of friendship is not a part of justice. For justice consists in giving another man his due. But this virtue does not consist in doing that, but in behaving agreeably towards those among whom we live. Therefore this virtue is not a part of justice.
Objection 2 : Further, according to the Philosopher (Ethic. iv, 6), this virtue is concerned about the joys and sorrows of those who dwell in fellowship. Now it belongs to temperance to moderate the greatest pleasures, as stated above (FS, Question [60], Article [5]; FS, Question [61], Article [3]). Therefore this virtue is a part of temperance rather than of justice.
Objection 3 : Further, to give equal things to those who are unequal is contrary to justice, as stated above (Question [59], Articles [1],2). Now, according to the Philosopher (Ethic. iv, 6), this virtue "treats in like manner known and unknown, companions and strangers." Therefore this virtue rather than being a part of justice is opposed thereto.