Before I came here I was confused about this subject. Having listened to your lecture I am still confused. But on a higher level.
A person needs at intervals to separate himself from family and companions and go to new places. He must go without his familiars in order to be open to influences, to change.
Common sense is the most fairly distributed thing in the world, for each one thinks he is so well-endowed with it that even those who are hardest to satisfy in all other matters are not in the habit of desiring more of it than they already have.