"I hold that the ruler should be marked out from other men, not by taking life easily, but by his forethought and his wisdom and his eagerness for work." "if the campaign is in summer the general must show himself greedy for his share of the sun and the heat, and in winter for the cold and the frost, and in all labours for toil and fatigue."

— In our words · Source: Cyropaedia (Xenophon)