Courage ought to be guided by skill, and skill armed by courage. Neither should hardiness darken wit, nor wit cool hardiness. Be valiant as men despising death, but confident as unwonted to be overcome.
Philip SidneyIf any sensual weakness arise, we are to yield all our sound forces to the overthrowing of so unnatural a rebellion; wherein how can we want courage, since we are to deal against so feeble an adversary, that in itself is nothing but weakness? Nay, we are to resolve that if reason direct it, we must do it, and if we must do it, we will do it; for to say "I cannot" is childish, and "I will not" is womanish.
Philip SidneyAs 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.
Philip Sidney