Material civilization is like the body and spiritual civilization is like the soul. Body without soul cannot live.
(‘Abdu’l-Bahá, ‘Abdu’l-Bahá in London, p. 30)
The one reason I wish to live is that I may reveal Thy Cause, and I seek the continuance of life only that I may be touched by adversity in Thy path.
(Bahá’u’lláh, Prayers and Meditations by Bahá’u’lláh, p. 147)
Ye must live and move according to the divine commands and behests.
(‘Abdu’l-Bahá, Tablets of ‘Abdu’l-Bahá v3, p. 511)