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:

    There is not any present moment that is unconnected with some future one. The life of every man is a continued chain of incidents, each link of which hangs upon the former. The transition from cause to effect, from event to event, is often carried on by secret steps, which our foresight cannot divine, and our sagacity is unable to trace. Evil may at some future period bring forth good; and good may bring forth evil, both equally unexpected.
    Joseph Addison (1672–1719)

    What is the foundation of that interest all men feel in Greek history, letters, art and poetry, in all its periods from the Heroic and Homeric age down to the domestic life of the Athenians and Spartans, four or five centuries later? What but this, that every man passes personally through a Grecian period.
    Ralph Waldo Emerson (1803–1882)