SB 12.4.37
anady-antavatanena
kalenesvara-murtina
avastha naiva drsyante
viyati jyotisam iva
Translation:
These stages of existence created by beginningless and endless time, the impersonal representative of the Supreme Lord, are not visible, just as the infinitesimal momentary changes of position of the planets in the sky cannot be directly seen.
Purport:
Although everyone knows that the sun is constantly moving in the sky, one cannot normally see the sun moving. Similarly, no one can directly perceive his hair or nails growing, although with the passing of time we perceive the fact of growth. Time, the potency of the Lord, is very subtle and powerful and is an insurmountable barrier to fools who are trying to exploit the material creation.