Wisdom is not finally tested by the schools, Wisdom cannot be pass'd from one having it to another not having it, Wisdom is of the soul, is not susceptible of proof, is its own proof.
Do not fix hopes on your health, and do not laugh away life. Remember how they walked and now all their joints lie separately, and the tongue with which they talked lightly is eaten away by the worms
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.