मनो हि द्विविधं प्रोक्तं शुद्धं चाशुद्धमेव च ।
अशुद्धं कामसम्पर्कात् शुद्धं कामविवर्जितम् ॥
mano hi dvi-vidhaṁ proktaṁ śuddhaṁ cāśuddham eva ca |
aśuddhaṁ kāma-samparkāt śuddhaṁ kāma-vivarjitam ||
(Maitrāyaṇīya Upaniṣad: 6.34.6)
“The mind is said to be of two types: pure and impure. It is impure because of association with kāma, and pure when completely purged of kāma.”