Another Samradian--or perhaps the same individual--having married the daughter of a rich man, she, on finding out her husband's creed, proposed to have some amusement at his expense. One day the Samradian brought in a bottle of pure wine, which during his absence she emptied of its contents and filled with water. When the time for taking wine arrived she poured out water instead of wine, into a gold cup which was her own property. The Samradian having observed, 'Thou hast given me water instead of wine,'--she answered, 'It is only ideal; there was no wine in existence.' The husband then said, 'Thou hast spoken well; hand me the cup that I may go to a neighbour's house and bring it back full of wine.' He thereupon took out the gold cup, which he sold, and instead of it brought back an earthen vessel full of wine. The wife on seeing this said, 'What hast thou done with the golden cup?' He replied, 'Thou art surely thinking of some ideal golden cup'--on which the woman greatly regretted her witticism.--_Dabistán_, v. i. p. 199-200.] REDACTION OF COLLOQUIAL ARGUMENTS XXVIII A clever man has said that the use of language is to conceal thought. Its primary use is certainly not to reveal thought, but to enable one person to produce an effect on the mind of another or of others, either for their or his own advantage. In the course of using speech as an instrument of command, entreaty, persuasion, menace, or fustigation, it may happen that the movements of the speaker's mind are revealed to some extent, but this is a mere incident, not the main purpose of the speech. Grammar is the system of rules which govern the use of language in its primary and ordinary capacity. It follows from this that language is in no sense a revelation of the reasoning processes, nor do the rules of grammar coincide with the laws of intellect. It is just as reasonable to expect to find the metaphysic of thought revealed in any of the industrial and fine arts, as to look for it in the structure of speech. Aristotle drew his logic from the composition of the Greek sentence--he might as well have sought for logic in the constitution of the Greek buskin.[16] Even when men begin to reason aloud and seek to render their logical movements as evident as possible, they are so hampered by the ordinary habits and rules of speech that their meaning is often difficult or impossible of comprehension. Whence arises the necessity, if we would reason aloud to any purpose, of redacting or translating language from the vernacular into a dialect more indicative of the logical processes that take place when we reason.