Mind and intelligence are already there in the soul, but in the conditional stage the same mind and intelligence become polluted as false egotism or enjoyer. The bhakti process is to purify everything. The mind is not the soul but is a venue for expressing the soul's desire. So if the mind is purified, then things go on nicely in its original position. If he does not go on rightly he falls down in conditional life. The whole yogic system is to convert the mind from matter to spirit. You can utilize the mind in both ways. When the mind is spiritually trained up it is the best friend of the soul, and when the mind is materially polluted, it is the worst enemy.
Letter to Prem J. Batra, 28 September, 1975