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18 in his Holy Word: "And what shall teach thee the forces of thy Lord?" The heart was destined to acquire a knowledge of God, in which its happiness consists. But we cannot grow in the knowledge of God, unless we understand the works of God.

The works of God are apprehended by the senses, which are five, hearing, sight, taste, smell and touch. For such an arrangement of the senses, there was also need of a body. The body itself is composed of four diverse elements, water, earth, air and fire. Being, therefore, liable to decay, it is in continual danger of perishing from the external and internal enemies that perpetually assail it. Its external enemies, are such as wild beasts, drowning and conflagrations; its internal enemies, such as hunger and thirst. For the purpose of resisting these, it was in want of various internal and external forces, such as the hand and foot, sight and hearing, food and drink. And in this connection, for eating and drinking, it is in want of internal and external instruments like the hand, the mouth, the stomach, the powers of appetite and digestion. In addition to these instruments, there was need of means to guide in their occasional use, that is, for the internal senses. These are five, the faculties of perception, reflection, memory, recollection and imagination. Their home is in the brain, and each has a specific function, as is well known to the learned. If to any one of all these faculties and instruments an injury occurs, the actions of man are defective. Now all these are the agents of the heart and subject to its rule. If, for example, the heart gives permission to the ear, hearing results; if it gives permission to the eye, there follows sight; if it gives permission to the foot, there is movement. All the other members are obedient in the same manner to the commands of the heart. The divine plan in all this arrangement is, that while the members preserve