The eye (sight) departed, and having been absent for a year, it came round and said: 'How have you been able to live without me?' They replied: 'Like blind people, not seeing, but breathing with the breath, speaking with the tongue, hearing with the ear, thinking with the mind. Thus we lived.' Then the eye went back.

In plain words: Sight left for a year. The others lived like blind people, but still breathed, spoke, heard and thought. So the eye came back.