O SON OF DUST! Blind thine eyes, that thou mayest behold My beauty; stop thine ears, that thou mayest hearken unto the sweet melody of My voice; empty thyself of all learning, that thou mayest partake of My knowledge; and sanctify thyself from riches, that thou mayest obtain a lasting share from the ocean of My eternal wealth. Blind thine eyes, that is, to all save My beauty; stop thine ears to all save My word; empty thyself of all learning save the knowledge of Me; that with a clear vision, a pure heart and an attentive ear thou mayest enter the court of My holiness.

Bahá'u'lláh
The Hidden Words, persian 11