The status of women up to now has been compared to that of a slave; women have been tied to the home, and only socialism can save them from this. They will only be completely emancipated when we change from small-scale individual farming to collective farming and collective working of the land.
Vladimir LeninHuman knowledge is not (or does not follow) a straight line, but a curve, which endlessly approximates a series of circles, a spiral. Any fragment, segment, section of this curve can be transformed (transformed one-sidedly) into an independent, complete, straight line, which then (if one does not see the wood for the trees) leads into the quagmire, into clerical obscurantism (where it is anchored by the class interests of the ruling classes).
Vladimir Lenin