|Chapter 2||The Eternal Reality of the Soul's Immortality||Verse 67|
Rudra Vaisnava Sampradaya:
The reason why one who is uncontrolled is devoid of knowledge is now being stated in this verse. Whichever one of the wandering senses the uncontrolled mind follows, that sense by itself enslaves the mind and carries away all discrimination making one restless for the object of desire. As the wind effortlessly snatches away a boat on the ocean whose helmsman is not in control; similarly the senses of one who is uncontrolled snatches away even their mundane intelligence.
Brahma Vaisnava Sampradaya:
In this verse Lord Krishna gives an analogy on the condition of those who meditate on their senses. One may ask the question, Do not the senses perform the activities energised by the Supreme Lord? This is only partly true because wisdom is an essential ingredient of meditation and when one is pursuing the senses then wisdom is lost and one is out of control like a ship in a storm causing the senses to lose their essential purpose.
Sri Vaisnava Sampradaya:
When the senses are rambling about in pursuit of their delights and one allows their mind to follow in hot pursuit after them, then the mind will be deprived of its inherent intelligence and will completely forget all the things that lead to ones highest good. Instead of inducing a strong will to pursue spiritual development one will develop a strong will for sensual enjoyment. Thus Lord Krishna gives this fitting analogy of a ship in the ocean being tossed about violently hither and thither by tempestuous winds. The conclusion of this rational is explained in the next verse.
Kumara Vaisnava Sampradaya:
Lord Krishna declares that one who is unable to control their mind and senses cannot be in possession of determinate reason. This is because any one of the rambling senses which the mind attaches itself to in pursuit of sense objects has the power to deviate one, taking away even their common sense and compelling them to be oblivious to their highest good which is realisation of the soul. The example given of an unfavourable wind forcibly propelling astray a boat in the water, completely deviating it from its destination is quite apropos.