BG 2.67

As a strong wind sweeps away a boat on the water, even one of the roaming senses on which the mind focuses can carry away a man’s intelligence.

2.67. That mind, which is directed to follow the wandering (enjoying) sense-organs-that mind carries away his knowledge just as wind does a ship on waters.

2.67 As a ship at sea is tossed by the tempest, so the reason is carried away by the mind when preyed upon by straying senses.

2.67 See Comment under 2.68

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 one's spiritual inclination, and the mind ultimately succumbs to them unresisting.]

2.67 Hi, for; yat manah, the mind which; anu-vidhiyate, follows in the wake of; caratam, the wandering; indriyani, senses that are tending towards their respective objects; tat, that, the mind engaged in thinking [Perceiving objects like sound etc. in their respective varieties.] of the objects of the senses; harati, carries away, destroys; asya, his, the sannyasin's; prajnam, wisdom born from the discrimination between the Self and the not-Self. How? Iva, like; vayuh, the wind; diverting a navam, boat; ambhasi, on the waters. As wind, by diverting a boat on the waters from its intended course, drives it along a wrong course, similarly the mind, by diverting the wisdom from the pursuit of the Self, makes it engage in objects. After having stated variously the reasons for the idea conveyed through the verse, 'For, O son of Kunti,' etc. (60), and having established that very idea, the Lord concludes thus:

2.67 For, when the mind follows the senses experiencing their objects, his understanding is carried away by them as the wind carries away a ship on the waters.

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.