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Cliquer sur les phrases pour les voir dans leur contexte. Les textes de Immanuel Kant et David Hume sont disponibles auprès du Projet Gutenberg.
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- In one word, a full and clear definition ought, in philosophy, rather to form the conclusion than the commencement of our labours.* In mathematics, on the contrary, we cannot have a conception prior to the definition; it is the definition which gives us the conception, and it must for this reason form the commencement of every chain of mathematical reasoning.
In like manner, it will be made manifest in the detailed explanation of these ideas--how reason, merely through the synthetical use of the same function which it employs in a categorical syllogism, necessarily attains to the conception of the absolute unity of the thinking subject--how the logical procedure in hypothetical ideas necessarily produces the idea of the absolutely unconditioned in a series of given conditions, and finally--how the mere form of the disjunctive syllogism involves the highest conception of a being of all beings; a thought which at first sight seems in the highest degree paradoxical. The condition of reason in these dialectical arguments, I shall term the antinomy of pure reason. For a disposition which should require the prospect of happiness as its necessary condition would not be moral, and hence also would not be worthy of complete happiness--a happiness which, in the view of reason, recognizes no limitation but such as arises from our own immoral conduct.