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 WhatelyAn instinct is a blind tendency to some mode of action, independent of any consideration, on the part of the agent, of the end to which the action leads.
Richard WhatelyTo be always thinking about your manners is not the way to make them good; the very perfection of manners is not to think about yourself.
Richard WhatelyFalsehood is difficult to be maintained. When the materials of a building are solid blocks of stone, very rude architecture will suffice; but a structure of rotten materials needs the most careful adjustment to make it stand at all.
Richard Whately