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-BaháThe wisdom of the appearance of the spirit in the body is this: the human spirit is a Divine Trust, and it must traverse all conditions, for its passage and movement through the conditions of existence will be the means of its acquiring perfections.
Abdu'l-BaháA man may be a Bah' in name only. If he is a Bah' in reality, his deeds and actions will be decisive proofs of it. What are the requirements? Love for mankind, sincerity toward all, reflecting the oneness of the world of humanity, philanthropy, becoming enkindled with the fire of the love of God, attainment to the knowledge of God and that which is conducive to human welfare.
Abdu'l-BaháTo attain eternal happiness one must suffer. He who has reached the state of self-sacrifice has true joy. Temporal joy will vanish.
Abdu'l-BaháWe declare that love is the cause of the existence of all phenomena and that the absence of love is the cause of disintegration or non-existence.
Abdu'l-Bahá