1 Peter 1 : 24, 25 (NIV-'11)

24 For,
“All people are like grass,
and all their glory is like the flowers of the field;
the grass withers and the flowers fall,
25 but the word of the Lord endures forever.”
And this is the word that was preached to you.

It is so true that all earthly things and achievements are temporal. Only God and His Word remains everlasting.