As a science, logic institutes an analysis of the process of the mind in reasoning, and investigating the principles on which argumentation is conducted; as an art, it furnishes such rules as may be derived from those principles, for guarding against erroneous deductions.
Richard WhatelyChristianity, contrasted with the Jewish system of emblems, is truth in the sense of reality, as substance is opposed to shadows, and, contrasted with heathen mythology, is truth as opposed to falsehood.
Richard Whately