The syllogism of existence is a syllogism of understanding merely, at least in so far as it leaves the individual, the particular, and the universal to confront each other quite abstractly. In this syllogism the notion is at the very height of self-estrangement. We have in it an immediately individual thing as subject: next some one particular aspect or property attaching to this subject is selected, and by means of this property the individual turns out to be a universal. Thus we may say, This rose is red: Red is a colour: Therefore, this rose is a coloured object. It is this aspect of the syllogism which the common logics mainly treat of. There was a time when the syllogism was regarded as an absolute rule for all cognition, and when a scientific statement was not held to be valid until it had been shown to follow from a process of syllogism. At present, on the contrary, the different forms of the syllogism are met nowhere save in the manuals of Logic; and an acquaintance with them is considered a piece of mere pedantry, of no further use either in practical life or in science. It would indeed be both useless and pedantic to parade the whole machinery of the formal syllogism on every occasion. And yet the several forms of syllogism make themselves constantly felt in our cognition. If any one, when awaking on a winter morning, hears the creaking of the carriages on the street, and is thus led to conclude that it has frozen hard in the night, he has gone through a syllogistic operation:--an operation which is every day repeated under the greatest variety of conditions. The interest, therefore, ought at least not to be less in becoming expressly conscious of this daily action of our thinking selves, than confessedly belongs to the study of the functions of organic life, such as the processes of digestion, assimilation, respiration, or even the processes and structures of the nature around us. We do not, however, for a moment deny that a study of Logic is no more necessary to teach us how to draw correct conclusions, than a previous study of anatomy and physiology is required in order to digest or breathe. Aristotle was the first to observe and describe the different forms, or, as they are called, figures of syllogism, in their subjective meaning: and he performed his work so exactly and surely, that no essential addition has ever been required. But while sensible of the value of what he has thus done, we must not forget that the forms of the syllogism of understanding, and of finite thought altogether, are not what Aristotle has made use of in his properly philosophical investigations. (See § 189.)