"Mengistu does not understand the meaning of self-determination, either historically or in the abstract. He cannot conceive of a nation as anything but an absolute centralized authority, totalitarianism, for his rule is nothing less than that now."

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In this science the illustrations and examples are not confined in their effect merely to the practice they afford in the analytical art, but [...] they also store the mind with independent geometrical and physical knowledge. Besides, it should be considered, that the only effectual method of impressing abstract formulae and rules upon the memory, and, indeed, of making them fully and clearly apprehended by the understanding, is by examples of their practical application.

— Dionysius Lardner