SECTION 19. The preceding rule may be taken as a special case of the
more general maxim, that a man should never let himself be mastered by the impressions of the moment, or indeed by outward appearances at all, which are incomparably more powerful in their effects than the mere play of thought or a train of ideas; not because these momentary impressions are rich in virtue of the data they supply,—it is often just the contrary,—but because they are something palpable to the senses and direct in their working; they forcibly invade our mind, disturbing our repose and shattering our resolutions.
It is easy to understand that the thing which lies before our very eyes will produce the whole of its effect at once, but that time and leisure are necessary for the working of thought and the appreciation of argument, as it is impossible to think of everything at one and the same moment. This is why we are so allured by pleasure, in spite of all our determination to resist it; or so much annoyed by a criticism, even though we know that its author it totally incompetent to judge; or so irritated by an insult, though it comes from some very contemptible quarter. In the same way, to mention no other instances, ten reasons for thinking that there is no danger may be outweighed by one mistaken notion that it is actually at hand. All this shows the radical unreason of human nature. Women frequently succumb altogether to this predominating influence of present impressions, and there are few men so overweighted with reason as to escape suffering from a similar cause.
If it is impossible to resist the effects of some external influence by the mere play of thought, the best thing to do is to neutralize it by some contrary influence; for example, the effect of an insult may be overcome by seeking the society of those who have a good opinion of us; and the unpleasant sensation of imminent danger may be avoided by fixing our attention on the means of warding it off.
Leibnitz[29] tells of an Italian who managed to bear up under the tortures of the rack by never for a moment ceasing to think of the gallows which would have awaited him, had he revealed his secret; he kept on crying out: I see it! I see it!—afterwards explaining that this was part of his plan.
29 ([a]return])
[ Nouveaux Essais. Liv. I. ch. 2. Sec. 11.]
It is from some such reason as this, that we find it so difficult to stand alone in a matter of opinion,—not to be made irresolute by the fact that everyone else disagrees with us and acts accordingly, even though we are quite sure that they are in the wrong. Take the case of a fugitive king who is trying to avoid capture; how much consolation he must find in the ceremonious and submissive attitude of a faithful follower, exhibited secretly so as not to betray his master's strict incognito; it must be almost necessary to prevent him doubting his own existence.