Yoga Sutras of Patanjali · 4.10

तासामनादित्वं चाशिषो नित्यत्वात्॥१०॥

tāsām anāditvaṁ cāśiṣo nityatvāt

These vasanas are beginningless, because the will to live is eternal.

— Yoga Sutras of Patanjali 4.10

Source: Sanskrit attributed to Patanjali (c. 2nd century BCE – 4th century CE). Public-domain English readings drawn from Swami Vivekananda's 'Raja Yoga' (1896) and Charles Johnston's 'The Yoga Sutras of Patanjali' (1912).