“ Even feeling, bodily as well as mental, has its Dialectic. Every one knows how the extremes of pain and pleasure pass into each other: the heart overflowing with joy seeks relief in tears, and the deepest melancholy will at times betray its presence by a smile. ”
 Georg Wilhelm Friedrich Hegel, Science of Logic (1816). copy citation

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“In political life, as every one knows, extreme anarchy and extreme despotism [Pg 151] naturally lead to one another. The perception of Dialectic in the province of individual Ethics is seen in the well-known adages, Pride comes before a fall: Too much wit outwits itself. Even feeling, bodily as well as mental, has its Dialectic. Every one knows how the extremes of pain and pleasure pass into each other: the heart overflowing with joy seeks relief in tears, and the deepest melancholy will at times betray its presence by a smile. (2) Scepticism should not be looked upon merely as a doctrine of doubt. It would be more correct to say that the Sceptic has no doubt of his point, which is the nothingness of all finite existence. He who only doubts still clings to the hope that his doubt may be resolved, and that one or other of the definite views, between which he wavers, will turn out solid and true.” source