Life and body are fickle like lightening
Body is also destructible like life. As the time passes, it becomes old. Beauty of the youth worns-out in the old age – muscles and the healthy body wrinkles, eyes sink, hairs turn grey, body becomes weak, it soon becomes tired even after little exertion, and because of weakness different diseases attack the body. Therefore, until body is healthy, it should be used for public welfare.
- Uttaradhyayana Sutra 18/13