Illnesses which occur because of physical causes should be treated by doctors with medical remedies; those which are due to spiritual causes disappear through spiritual means. Thus an illness caused by affliction, fear, nervous impressions, will be healed more effectively by spiritual rather than physical treatment. Hence, both kinds of treatment should be followed; they are not contradictory.
Abdu'l-BaháBe ye a refuge to the fearful; bring ye rest and peace to the disturbed; make ye a provision for the destitute; be a treasury of riches for the poor; be a healing medicine for those who suffer pain; be ye doctor and nurse to the ailing; promote ye friendship, and honour, and conciliation, and devotion to God, in this world of non-existence.
Abdu'l-BaháIn the beginning of his human life man was embryonic in the world of the matrix. There he received capacity and endowment for the reality of human existence. The forces and powers necessary for this world were bestowed upon him in that limited condition. In this world he needed eyes; he received them potentially in the other. He needed ears; he obtained them there in readiness and preparation for his new existence. The powers requisite in this world were conferred upon him in the world of the matrix.
Abdu'l-BaháTo oppose knowledge is ignorant, and he who detests knowledge and science is not a man, but rather an animal without intelligence. For knowledge is light, life, felicity, perfection, beauty and the means of approaching the Threshold of Unity. It is the honor and glory of the world of humanity, and the greatest bounty of God. Knowledge is identical with guidance, and ignorance is real error
Abdu'l-Bahá