The possession of clairvoyant power is a very great privilege and a very great advantage, and if properly and sensibly used it may be a blessing and a help to its fortunate holder, just as surely as, if it is misused, it may often be a hindrance and a curse. The principal dangers attendant upon it arise from pride, ignorance, and impurity, and if these be avoided, as they easily may be, nothing but good can come from it...