S. Jay Olshansky Duration Quotations

The only control we have over the duration of our life is to shorten it, and we do that all the time.

What we know for sure from our work and from others' is that mice have a life span of 1,000 days, dogs have 5,000 days, and we humans have 29,000 days. Recognizing that the duration is limited, and aging is inevitable, focus the attention on enhancing the quality of the days you have.