na hy asmābhir āhatya cakṣurādīdantayā sādhyate, api tu jñānaṃ keṣucid rūpādiṣu satsv anvayavyatirekāv anubhavad dṛśyate
For we do not prove the existence of the eye directly as "this is the eye"; rather, cognition is seen to experience positive and negative concomitance when certain colors etc. are present.