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As in labor, the more one doth exercise, the more one is enabled to do, strength growing upon work; so with the use of suffering, men's minds get the habit of suffering, and all fears and terrors are not to them but as a summons to battle, whereof they know beforehand they shall come off victorious.

Sir Philip Sidney, Jane Porter (1807). “Aphorisms of Sir Philip Sidney: With Remarks”, p.144
As in labor, the more one doth exercise, the more one is enabled to do, strength growing upon work; so with the use of suffering, men's minds get the habit of suffering, and all fears and terrors are not to them but as