Vanisource:Sloka of the day/November 6, 2008
āyur harati vai puṁsām
udyann astaṁ ca yann asau
tasyarte yat-kṣaṇo nīta
uttama-śloka-vārtayā
Both by rising and by setting, the sun decreases the duration of life of everyone, except one who utilizes the time by discussing topics of the all-good Personality of Godhead.