The real soul is the nature of all things. This soul shines forth on all minds. It has great wisdom in innumerable ways, according to the different needs of men, so as to instruct them in all kinds of ways. On this account it has been named the seed of all wisdom.
True metta is devoid of self-interest. It evokes within a warm-hearted feeling of fellowship, sympathy and love, which grows boundless with practice and overcomes all social, religious, racial, political and economic barriers. Metta is indeed a universal, unselfish and all-embracing love.
— Acharya Buddharakkhita