Yoga Sūtra Chapter Four verse 23

द्रष्टृदृश्योपरक्तं चित्तं सर्वार्थम् ॥२३॥

draṣṭṛ-dṛṣya-uparaktaṃ cittaṃ sarva-artham ||23||

The all purpose psyche is coloured by the seer and the seen.

draṣṭṛ - seerdṛśya - the seenuparakta - colouredcitta - psyche; heart as the seat of feelings and sensationssarva - allartha - purpose