इन्द्रियाणां हि चरतां यन्मनोऽनुविधीयते।
तदस्य हरति प्रज्ञां वायुर्नावमिवाम्भसि।।2.67।।
2.67 For, the mind which follows in the wake of the wandering senses, that (mind) carries away his wisdom like the mind (diverting) a boat on the waters.
2.67 That mind, which is allowed by a person to be submissive to, i.e., allowed to go after the senses which go on operating, i.e., experiencing sense-objects, such a mind loses its inclination towards the pure self. The meaning is that it gets inclined towards sense-objects. Just as a contrary wind forcibly carries away a ship moving on the waters, in the name manner wisdon also is carried away from such a mind. [The idea is that the pursuit of sense pleasures dulls ones spiritual inclination, and the mind ultimately succumbs to them unresisting.]
Indriyaanaam hi charataam yanmano’nuvidheeyate; Tadasya harati prajnaam vaayur naavam ivaambhasi.
indriyāṇām—of the senses; hi—indeed; charatām—roaming; yat—which; manaḥ—the mind; anuvidhīyate—becomes constantly engaged; tat—that; asya—of that; harati—carries away; prajñām—intellect; vāyuḥ—wind; nāvam—boat; iva—as; ambhasi—on the water