Logic is a support that reason takes to strengthen itself; it may be called a fortification of reason. The analytical faculty of the mind seeks for something substantial to make reason cut and dry. In other words logic may be called authorized reason, or reason supported by the reason of others.

Logic has a larger field than reason, because the scope of reason is only the mind of one individual. The scope of logic is vaster, it represents the minds of many individuals who have thought on the same subject. Logic is a degree higher in knowledge than reason. When one person gives a reason and another person says there is no logic in it, that means that there is no support for this reason from other minds which have thought about the subject.

In one sense logic may be said to be concrete and realistic knowledge, and yet in another sense it is most limited and poor knowledge. It is limited to names and forms that are forever changing; it is poor because it is founded on a substance that is subject to destruction. When logic helps to strengthen the knowledge of names and forms and of conditions it is a great help, but when it confines the progress of the soul, which is made on a different path, it is a great hindrance. In other words it may be said that the possessor of logic is a learned man, but he who is possessed by logic is lost.