from January, 1948 East-West (early name of Self-Realization magazine) – see the “Special Message” photo from the magazine below
Every student of Self-Realization–of all centers everywhere–who wishes to attain final emancipation should be connected with Self-Realization Headquarters directly by taking the priceless Self-Realization praecepta lessons sent out every week. These studies will enable you to find the secret door of your Soul–through which you can sense the presence of great gurus and Christ waiting to introduce you to the Infinite. “None can come unto me unless the heavenly Father draweth him.” The heavenly Father can be reached only through His chosen messengers–such as Christ and the great gurus.
One who has even a faint desire to know God finds that books and teachers are mysteriously thrown in his path. But when the devotional flame in the devotee’s heart is fully roused, then God arranges to draw him to his kingdom through a real guru-preceptor who perceives him. The blind cannot lead the blind. Only a true guru can can lead the devotee–one who so loves God that, oblivious to himself, his only desire is to establish God in true disciples who come unto him sent by the heavenly Father.
This is not an age in which earnest seekers will find satisfaction merely by listening to spiritual sermons. They must learn to perceive God through Kriya Yoga, given through the link of the guru-preceptors.
— Paramhansa Yogananda
January, 1948 East-West (early name of Self-Realization magazine)