Fleeting Instant

Remember that man lives only in the present, in this fleeting instant; all the rest of his life is either past and gone, or not yet revealed.  Short, therefore, is man's life, and narrow is the corner of the earth wherein he dwells.

-- Marcus Aurelius Antoninus (121 - 180), Roman emperor from 161 to 180 and a Stoic philosopher, Meditations (c. AD 121–180), Book III, 10