I used to measure the heavens, now I measure the shadows of Earth. Although my mind was heaven-bound, the shadow of my body lies here.
Epitaph he composed for himself a few months before he died, as quoted by Steven G. Krantz, Brian E. Blank, Calculusː Multivariable (2006) p. 126.
John bare witness of him, and cried, saying, This was he of whom I spake, He that cometh after me is preferred before me: for he was before me.John 1:15 KJV