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But here we may observe, that though the intercourse of different states be advantageous, and even sometimes necessary, yet it is nor so necessary nor advantageous as that among individuals, without which it is utterly impossible for human nature ever to subsist. The legislation of human reason, or philosophy, has two objects- nature and freedom--and thus contains not only the laws of nature, but also those of ethics, at first in two separate systems, which, finally, merge into one grand philosophical system of cognition.