Holy Dialogue (Pravachana Vakhyalu):
Our soul within may be compared to the Lord seated in a chariot. This body of ours, this individuality, this personality, may be regarded as a chariot in which is seated the soul- consciousness. The chariot is driven by a charioteer, a driver. The intellect in us is the charioteer. The reins are the operations of the mind. The horses which pull or drag this chariot are the senses—the eyes, ears, etc. The roads along which this chariot is driven by the charioteer with the help of the horses are the objects of the senses. All this is made possible by a joint activity of the Atman, the senses and the mind. This is a very concise and beautiful description, symbolic, dramatic, full of meaning and profundity. This chariot is to be driven right to the Abode of Vishnu—tad vishnohparamampadam. If the horses are restive, if they are tired, if they are unwilling, if they cannot see the road properly, they may dash down the chariot into a ditch. Sometimes, we see horses dragging tongas and going backwards! They will not go forward. Then the tongawalla gets down and catches hold of the reins. Either the horses are exhausted, or they are annoyed. Sometimes, these horses of our senses behave in this manner.
The chariot is also to be made of good material; otherwise it may get disintegrated by wear and tear of movement. The charioteer plays the most important part in this entire activity of the locomotion of the chariot. You know the role Sri Krishna played in driving the chariot of Arjuna. Everything was dependent on him. The driver of a car, even in your own case, is very important. You sit in the car comfortably, and doze there, but what is the responsibility of the driver? Your life is in his hands. If he also starts dozing, what will happen? So, the charioteer, the intellect, the understanding, the rationality in us is the primeval faculty which determines the extent of our progress in this effort, called the practice of yoga. Look at the various aspects of this movement of the chariot described in this passage. The roads are the objects of sense. The senses are the horses. The intellect is the charioteer. The rider is the soul. The body is the chariot. Everything is very essential.
---Excerpts from Sri Swami Krishnananda’s Preaching