With age, man's hair grows grey; his teeth become loose; his eyes and ears too become dim in action; but the only thing that does not decline is his desire for enjoyments.
जीर्यन्ति जीर्यतः केशा दन्ता जीर्यन्ति जीर्यतः। चक्षुःश्रोत्रे च जीर्येते तृष्णैका न तु जीर्यते॥