Life span or lifespan may refer to:
- Maximum life span, the maximum lifespan observed in a group
- Life expectancy, the average lifespan expected of a group
- Longevity, the average lifespan expected under ideal conditions
- Lifespan (film), a 1976 film starring Klaus Kinski
Famous quotes containing the words life and/or span:
“The most useful man in the most useful world, so long as only commodity was served, would remain unsatisfied. But, as fast as he sees beauty, life acquires a very high value.”
—Ralph Waldo Emerson (1803–1882)
“School-days, I believe, are the unhappiest in the whole span of human existence. They are full of dull, unintelligible tasks, new and unpleasant ordinances, brutal violations of common sense and common decency. It doesn’t take a reasonably bright boy long to discover that most of what is rammed into him is nonsense, and that no one really cares very much whether he learns it or not.”
—H.L. (Henry Lewis)