No man is obliged to learn and know every thing; this can neither be sought nor required, for it is utterly impossible; yet all persons are under som… - Isaac Watts

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No man is obliged to learn and know every thing; this can neither be sought nor required, for it is utterly impossible; yet all persons are under some obligation to improve their own understanding; otherwise it will be a barren desert, or a forest overgrown with weeds and brambles. Universal ignorance or infinite errors will overspread the mind which is utterly neglected and lies without any cultivation.