Baha'is believe that work performed in a spirit of service is worship. Thus, together with active service, fasting, meditation, and obedience to spiritual and moral laws, prayer enables us to develop and grow closer to God. In the Baha'i Cause arts, sciences and all crafts are worship. The man who makes a piece of notepaper to the best of his ability, conscientiously, concentrating all his forces on perfecting it, is giving praise to God. Briefly, all effort and exertion put forth by man from the fullness of his heart is worship, if it is prompted by the highest motives and the will to do service to humanity. This is worship: to serve mankind and to minister to the needs of the people. Service is prayer. A physician ministering to the sick, gently, tenderly, free from prejudice and believing in the solidarity of the human race, he is giving praise. Baha'is are enjoined to engage in trades, crafts, or professions to earn livelihoods and serve their community.