Common sense and education are highly compatible in fact, neither is worth much without the other.
The family seems to have two predominant functions to provide warmth and love in time of need and to drive each other insane.
The people who teach us that it is wrong to be skeptical are themselves the reasons that we should be skeptical.
If someone cheats you, get your money back. If someone slanders you, call him to account. If someone makes a promise, see that it is kept If you have to be a pest, then be one, and be proud of it.