bhagavad-bhakti-hinasya
jatih sastram japas tapah
apranasyaiva dehasya
mandanam loka-ranjanam

If one is born in a high family like that of a brahmana, ksatriya or vaisya but is not a devotee of the Lord, all his good qualifications as a brahmana, ksatriya or vaisya are null and void. Indeed, they are considered decorations of a dead body.

From Hari-bhakti-sudhodaya. Quoted in SB 7.9.10 purport by Srila Prabhupada