“Knowledge is as wings to man's life, and a ladder for his ascent”

...Arts, crafts and sciences uplift the world of being, and are conducive to its exaltation. Knowledge is as wings to man's life, and a ladder for his ascent. Its acquisition is incumbent upon everyone. The knowledge of such sciences, however, should be acquired as can profit the peoples of the earth ... truth, knowledge is a veritable treasure for man, and a source of glory, of bounty, of joy, of exaltation, of cheer and gladness unto him. Happy the man that cleaveth unto it, and woe betide the heedless. (Baha’u’llah, ‘Epistle to the Son of the Wolf’; The Compilation of Compilations, vol. I, Baha’i Education)

Music has a “great effect upon the human spirit”

Music is one of the important arts. It has a great effect upon the human spirit. Musical melodies are a certain something which prove to be accidental upon etheric vibrations, for voice is nothing but the expression of vibrations, which, reaching the tympanum, affect the nerves of hearing. Musical melodies are, therefore, those peculiar effects produced by, or from, vibration. However, they have the keenest effect upon the spirit. In sooth, although music is a material affair, yet its tremendous effect is spiritual, and its greatest attachment is to the realm of the spirit. (‘Abdu’l-Baha, ‘Table Talk’ Acca, July 1909, quoted in "Herald of the South" (January 13, 1933), pp. 2-3; The Compilation of Compilations, vol. II, Music)

God can be likened to the Sun Whose Spirit reaches us through the Souls of His Manifestations

We liken God to the Sun, which gives us all our life. So the Spirit of God reaches us through the Souls of the Manifestations. We must learn to commune with Their Souls …, This is the true mysticism, and the secret, inner meaning of life... (From a letter dated 28 July 1950 written on behalf of Shoghi Effendi Manchester Spiritual Assembly; The Unfolding Destiny of the British Baha'i Community)

Meditation and prayer help us bring about and maintain that state of “spiritual communion”, “that mystical feeling”, that unites us with God

… the core of religious faith is that mystic feeling that unites man with God. This state of spiritual communion can be brought about and maintained by means of meditation and prayer. And this is the reason why Bahá'u'lláh has so much stressed the importance of worship. It is not sufficient for a believer to merely accept and observe the teachings. He should, in addition, cultivate the sense of spirituality, which he can acquire chiefly by the means of prayer. The Bahá'í Faith, like all other Divine religions, is thus fundamentally mystic in character. Its chief goal is the development of the individual and society, through the acquisition of spiritual virtues and powers. It is the soul of man that has first to be fed. And this spiritual nourishment prayer can best provide. Laws and institutions, as viewed by Bahá'u'lláh, can become really effective only when our inner spiritual life has been perfected and transformed. Otherwise religion will degenerate into a mere organization, and become a dead thing. (From a letter dated 8 December 1935 written on behalf of Shoghi Effendi to an individual believer, published in "Bahá'í News" 102 (August 1936), p. 3; The Compilation of Compilations, Vol. II, The Importance of Prayer, Meditation and the Devotional Attitude)