"Every man must be taken to be cognizant of the law, otherwise there is no saying to what extent the excuse of ignorance may not be Law carried. It would be urged in almost every case."

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There are two distinctive peculiarities by reference to which we characterize the soul (1) local movement and (2) thinking, discriminating, and perceiving. Thinking both speculative and practical is regarded as akin to a form of perceiving; for in the one as well as the other the soul discriminates and is cognizant of something which is.

— Aristotle