'All is Vanity' in the Bible

Vanity of vanities, saith the Preacher; vanity of vanities, all is vanity.

I have seen all the works that are done under the sun; and, behold, all is vanity and a striving after wind.

So I hated life, because the work that is wrought under the sun was grievous unto me; for all is vanity and a striving after wind.

For that which befalleth the sons of men befalleth beasts; even one thing befalleth them: as the one dieth, so dieth the other; yea, they have all one breath; and man hath no preeminence above the beasts: for all is vanity.

Vanity of vanities, saith the Preacher; all is vanity.