Nyāya Sūtras 26.4

26.4

lokasāmānyam anatītā laukikā naisargikaṃ vainayikaṃ buddhyatiśayam aprāptāḥ/ tadviparītāḥ parīkṣakāḥ/ tarkeṇa pramāṇair arthaṃ parīkṣitum arhantīti/ yathā yam arthaṃ laukikā budhyante tathā parīkṣakā api,

Ordinary people are those who do not transcend the common run of the world, who have not attained an extraordinary intellect, whether innate or acquired through discipline. Opposite to them are critical investigators, who are capable of investigating an object by means of hypothetical reasoning and the means of valid cognition. Just as ordinary people cognize an object, so also do critical investigators;