Service attitude makes disordered society orderly
A brahmana, ksatriya, vaisya or sudra
can perfect his occupational duties only by rendering service unto the
Lord. A brahmana is supposed to know this fact due to his perfection in
Vedic wisdom. The other sections are supposed to follow the direction of
the brahmana Vaisnava (one who is a brahmana by qualification and a
Vaisnava by action). That will make the entire society perfect in regard
to the order of its social construction. A disordered society cannot
satisfy either the members of the society or the Lord. Even if one is not
a perfect brahmana, ksatriya, vaisya or sudra but takes to the service of
the Lord, not caring for the perfection of his social position, he
becomes a perfect human being simply by developing the attitude of
service to the Supreme Lord.
Srimad Bhagavatam 3.6.33 purport