…O my brother, when a true seeker determineth to take the
step of search in the path leading to the knowledge of the Ancient of Days, he
must, before all else, cleanse and purify his heart, which is the seat of the
revelation of the inner mysteries of God, from the obscuring dust of all
acquired knowledge, and the allusions of the embodiments of satanic fancy. He
must purge his breast, which is the sanctuary of the abiding love of the
Beloved, of every defilement, and sanctify his soul from all that pertaineth to
water and clay, from all shadowy and ephemeral attachments. He must so cleanse
his heart that no remnant of either love or hate may linger therein, lest that
love blindly incline him to error, or that hate repel him away from the truth.
- Baha’u’llah (‘The Kitab-i-Iqan’)