A mind open to impressions in this way may as well reflect a satanic as an angelic one, a wrong as easily as a right one. It is open to whatever comes into it. Such a person is as likely to be led astray as to be helped. The result is therefore only good as long as the impressions to which the mind responds are good ones. What then is the way in which one can be sure to have the mind focused upon good things and so receive only good impressions? There are three considerations: