Life

Life

Life (cf. biota) is a characteristic that distinguishes objects that have signaling and self-sustaining processes from those that do not, either because such functions have ceased (death), or else because they lack such functions and are classified as inanimate. Biology is the science concerned with the study of life.

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Famous quotes containing the word life:

    The literature of the poor, the feelings of the child, the philosophy of the street, the meaning of household life, are the topics of the time. It is a great stride. It is a sign,—is it not? of new vigor, when the extremities are made active, when currents of warm life run into the hands and the feet.
    Ralph Waldo Emerson (1803–1882)

    He was a man of Spartan habits, and at sixty was scrupulous about his diet at your table, excusing himself by saying that he must eat sparingly and fare hard, as became a soldier, or one who was fitting himself for difficult enterprises, a life of exposure.
    Henry David Thoreau (1817–1862)

    After I discovered the real life of mothers bore little resemblance to the plot outlined in most of the books and articles I’d read, I started relying on the expert advice of other mothers—especially those with sons a few years older than mine. This great body of knowledge is essentially an oral history, because anyone engaged in motherhood on a daily basis has no time to write an advice book about it.
    Mary Kay Blakely (20th century)