आत्मानं रथितं विद्धि शरीरं रथमेव तु ।
बुद्धिं तु सारथिं विद्धि मनः प्रग्रहमेव च ॥
इन्द्रियाणि हयानाहुर्विषयां स्तेषु गोचरान् ।
आत्मेन्द्रियमनोयुक्तं भोक्तेत्याहुर्मनीषिणः ॥
ātmānaṁ rathitaṁ viddhi śarīraṁ ratham eva tu |
buddhiṁ tu sārathiṁ viddhi manaḥ pragraham eva ca ||
indriyāṇi hayān āhur viṣayāṁs teṣu gocarān |
ātmendriya-manoyuktaṁ bhoktety āhur manīṣiṇaḥ ||
(Kaṭha Upaniṣad: 1.3.3–4)
“Know the self (ātmā) to be [like] the rider of a chariot and the body [to be like] a chariot. Know the intellect (buddhi) to be [like] a charioteer and the mind [to be like] reins. The wise say the senses are [like] horses and the objects of the senses (viṣayas) [are like] ranges, and [they] say the experiencer is the self united with the senses and mind [along with the body and intellect].”