It is necessary to keep one's compass in one's eyes and not in the hand, for the hands execute, but the eye judges.
MichelangeloSo now, from this mad passion Which made me take art for an idol and a king I have learnt the burden of error that it bore And what misfortune springs from man's desire... The world's frivolities have robbed me of the time That I was given for reflecting upon God.
Michelangelo