" For the doings of men are all dependent upon Thy good-pleasure..."

"Since Thou hast adorned them, O my Lord, with the ornament of the fast prescribed by Thee, do Thou adorn them also with the ornament of Thine acceptance, through Thy grace and bountiful favor. For the doings of men are all dependent upon Thy good-pleasure, and are conditioned by Thy behest. Shouldst Thou regard him who hath broken the fast as one who hath observed it, such a man would be reckoned among them who from eternity had been keeping the fast. And shouldst Thou decree that he who hath observed the fast hath broken it, that person would be numbered with such as have caused the Robe of Thy Revelation to be stained with dust, and been far removed from the crystal waters of this living Fountain."
-Baha'u'llah, Prayers and Meditations by Baha'u'llah, Pages 67-69

Feast of Alá (Loftiness) "Meditation is the key for opening the doors of mysteries."

"Through the faculty of meditation man attains to eternal life; through it he receives the breath of the Holy Spirit—the bestowal of the Spirit is given in reflection and meditation.
The spirit of man is itself informed and strengthened during meditation; through it affairs of which man knew nothing are unfolded before his view. Through it he receives Divine inspiration, through it he receives heavenly food.
Meditation is the key for opening the doors of mysteries. In that state man abstracts himself: in that state man withdraws himself from all outside objects; in that subjective mood he is immersed in the ocean of spiritual life and can unfold the secrets of things-in-themselves. To illustrate this, think of man as endowed with two kinds of sight; when the power of insight is being used the outward power of vision does not see.
This faculty of meditation frees man from the animal nature, discerns the reality of things, puts man in touch with God."
-"Abdu'l-Baha, Paris Talks, p. 174