It is not a sixth sense, but it is like the life of all the five.

It is the open eye, the quick ear, the judging taste, the keen smell, and lively touch; it is the interpreter of all riddles, the surmounter of all difficulties, the remover of all obstacles." The world is full of theoretical, one-sided, impractical men, who have turned all the energies of their lives into one faculty until they have developed, not a full-orbed, symmetrical man, but a monstrosity, while all their other faculties have atrophied and died.

We often call these one-sided men geniuses, and the world excuses their impractical and almost idiotic conduct in most matters, because they can perform one kind of work that no one else can do as well.

A merchant is excused if he is a giant in merchandise, though he may be an imbecile in the drawing-room.

Adam Smith could teach the world economy in his "Wealth of Nations," but he could not manage the finances of his own household.
Many great men are very impractical even in the ordinary affairs of life.