It is best for the wise man not to seem wise.
True wisdom is less presuming than folly. The wise man doubteth often, and changeth his mind; the fool is obstinate, and doubteth not; he knoweth all things but his own ignorance.
Quick condemnation of all that is not ours, of views with which we disagree, of ideas that do not attract us, is the sign of a narrow mind, of an uncultivated intelligence. Bigotry is always ignorant, and the wise boy, who will become the wise man, tries to understand and to see the truth in ideas with which he does not agree.
A man must fortify himself and understand that a wise man who yields to laziness or anger or passion or love of drink, or who commits any other action prompted by impulse and inopportune, will probably find his fault condoned; but if he stoops to greed, he will not be pardoned, but render himself odious as a combination of all vices at once.
The wise man does not expose himself needlessly to danger, since there are few things for which he cares sufficiently; but he is willing, in great crises, to give even his life - knowing that under certain conditions it is not worthwhile to live.