M. Tullius Cicero Pro L. Murena 22

[22] But to say no more of this, and to return to the contest of studies and pursuits; how can it be doubted that the glory of military exploits contributes more dignity to aid in the acquisition of the consulship, than renown for skill in civil law? Do you wake before the night is over in order to give answers to those who consult you? He has done so in order to arrive betimes with his army at the place to which he is marching. The cook-crow wakens you, but the sound of the trumpet rouses him: you conduct an action; he is marshaling an army: you take care lest your clients should be convicted; he lest his cities or camp be taken. He occupies posts, and exercises skill to repel the troops of the enemy, you to keep out the rain; he is practised in extending the boundaries of the empire, you in governing the present territories; and in short, for I must say what I think, preeminence in military skill excels all other virtues.
  10 It is this which has procured its name for the Roman people; it is this which has procured eternal glory for this city; it is this which has compelled the whole world to submit to our dominion; all domestic affairs, all these illustrious pursuits of ours, and our forensic renown, and our industry, are safe under the guardianship and protection of military valour. As soon as the first suspicion of disturbance is heard of, in a moment our arts have not a word to say for themselves.