"Life is but a walking shadow." (Shakespeare, Macbeth, Act 5, Scene 5, lines 24-25)

"He cometh forth like a flower, and is cut down: he fleeth also as a shadow, and continueth not." (Job 14:2, KJV)

"For we are strangers before thee, and sojourners, as were all our fathers: our days on the earth are as a shadow, and there is none abiding." (1 Chronicles 29:15, KJV)

"Lord, what are human beings that you care for them, mere mortals that you think of them?
They are like a breath; their days are like a fleeting shadow." (Ps 144:3-4, NIV)