Vaisesika Sūtra 3.2.04

prāṇa-apāna-nimeṣa-unmeṣa-jīvana-manaḥ-gati-indriya-antara-vikārāḥ sukha-duḥkha-icchā-dveṣa-prayatnāḥ-ca ātmanaḥ liṅgāni ॥4॥

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