“Yes, to seek power that's vain and never granted
and for it to suffer hardship and endless pain:
this is to heave and strain to push uphill
a boulder, that still from the very top rolls back
and bounds and bounces down to the bare, broad field.”

Nam petere imperium quod inanest nec datur umquam,
atque in eo semper durum sufferre laborem,
hoc est adverso nixantem trudere monte
saxa quod tamen e summo iam vertice rursum
volvitur et plani raptim petit aequora campi.
Book III, lines 998–1002 (tr. Frank O. Copley)
De Rerum Natura (On the Nature of Things)