'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 vexation of spirit.

Therefore I hated life; because the work that is wrought under the sun is grievous to me: for all is vanity and vexation of spirit.

For that which befalleth the sons of men befalleth beasts; even one thing befalleth them: as the one dieth, so dieth the other; yes, they have all one breath; so that a man hath no pre-eminence above a beast: for all is vanity.

Vanity of vanities saith the preacher; all is vanity.