Vaisesika Sūtra 3.2.04

प्राणापाननिमेषोन्मेषजीवनमनोगतीन्द्रियान्तरविकाराः सुखदुः खेच्छाद्वेषप्रयत्नाश्चात्मनो लिङ्गानि ॥४॥

Inhalation, exhalation, eye movements, life, movement of mind, internal distortions of the senses, pleasure, pain, desire, aversion, and efforts are indicators of the Ātma.