The military and naval professions are too active, and too much bound to obedience in their activity, for the highest intellectual pursuits; but their greatest evil in this respect is the continual privation of solitude, and the frequency of interruption. A soldier's life in the higher ranks, when there is great responsibility and the necessity for personal decision, undoubtedly leads to the most brilliant employment of the mental powers, and develops a manliness of character which is often of the greatest use in intellectual work; so that a man of science may find his force augmented, and better under control, for having passed through a military experience; but the life of barracks and camps is destructive to continuity of thinking. The incompatibility becomes strikingly manifest when we reflect how impossible it would have been for Ney or Massena to do the work of Cuvier or Comte. Cuvier even declined to accompany the expedition to Egypt, notwithstanding the prospects of advantage that it offered. The reason he gave for this refusal was, that he could do more for science in the tranquillity of the Jardin des Plantes. He was a strict economist of time, and dreaded the loss of it involved in following an army, even though his mission would have been purely scientific. How much more would Cuvier have dreaded the interruptions of a really military existence! It is these interruptions, and not any want of natural ability, that are the true explanation of the intellectual poverty which characterizes the military profession. Of all the liberal professions it is the least studious.