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2 the human race, reviewing its whole experience, acknowledge a progress and a gain? To answer these questions, as they may be answered speculatively and provisionally by an individual, is the purpose of the following work.

A philosopher could hardly have a higher ambition than to make himself a mouth-piece for the memory and judgment of his race. Yet the most casual consideration of affairs already involves an attempt to do the same thing. Reflection is pregnant from the beginning with all the principles of synthesis and valuation needed in the most comprehensive criticism. So soon as man ceases to be wholly immersed in sense, he looks before and after, he regrets and desires; and the moments in which prospect or retrospect takes place constitute the reflective or representative part of his life, in contrast to the unmitigated flux of sensations in which nothing ulterior is regarded. Representation, however, can hardly remain idle and merely speculative. To the ideal function of envisaging the absent, memory and reflection will add (since they exist and constitute a new complication in being) the practical function of modifying the future. Vital impulse, however, when it is modified by reflection and veers in sympathy with judgments pronounced on the past, is properly called reason. Man's rational life consists in those moments in which reflection not only occurs but proves efficacious. What is absent then works in