No power is strong enough to be lasting if it labors under the weight of fear.
There is also a tradition about Socrates. He liked walking, it is recorded, until a late hour of the evening, and when someone asked him why he did this he said he was trying to work up an appetite for his dinner.
O philosophy, life's guide! O searcher-out of virtue and expeller of vices! What could we and every age of men have been without thee? Thou hast produced cities; thou hast called men scattered about into the social enjoyment of life.