arise from unclear thinking or from confusion in the presentation of facts; Hegel, and after him Marx, dealt rather with real contradictions, with antitheses and conflicts, as they arise of themselves in the process of evolution of things and conditions. The thing or the being, against which the contradiction operates, was called by Hegel the Positive, and the contradiction, the antagonistic element, or the antithesis, he called the Negation. As may be seen from our example, this negation is not mere annihilation, not a resolution into nothing, but a clearing away and a building up at the same time; a disappearance and a coming into existence; a movement to a higher stage. Hegel says in this connection: "It has been hitherto one of the rooted prejudices of logic and a commonly accepted belief that the contradiction is not so essential or so inherent a characteristic (in thought and existence) as the identity. Yet in comparison with it the identity is, in truth, but the characteristic of what is simply and directly perceived, of lifeless existence. The contradiction, however, is the source of all movement and life; only in so far as it contains a contradiction can anything have movement, power, and effect." The part played by the contradiction, the antithesis, or the negation very easily escapes a superficial observer. He sees, indeed, that the world is filled with a variety of things, and that where anything is there is also its opposite; e.g., existence--non-existence, cold--heat, light--darkness, mildness--harshness, pleasure--pain, joy--sorrow, riches--poverty, Capital--Labour, life--death, virtue--vice, Idealism--Materialism, Romanticism--Classicism, etc., but superficial thought does not realise that it is faced with a world of contradictions and antitheses; it only knows that the world is full of varied and manifold things. "Only active reason," says Hegel, "reduced the mere multiplicity and diversity of phenomena to antithesis. And only when pushed to this point do the manifold phenomena become active and mutually stimulating, producing the state of negation, which is the very heart-beat of progress and life." Only through their differentiation and unfolding as opposing forces and factors is further progress beyond the antithesis to a higher positive stage made possible. "Where, however," continues Hegel, "the power to develop the contradiction and bring it to a head is lacking, the thing or the being is shattered on the contradiction."--(Hegel, "Science of Logic," Pt. 1, Sec. 2, pp. 66, 69, 70.) This thought of Hegel's is of extraordinary importance for the understanding of Marxism. It is the soul of the Marxian doctrine of the class-struggle, nay, of the whole Marxian system. One may say that Marx is always on the look-out for contradictions within the social development, for wherever the contradiction (antithesis--class struggle) shows itself, there begins, according to Marx-Hegel, the progress to a higher plane.[1]