Economic life is still more mobile. It is enough to follow the quotations in the exchange newspapers to understand how quickly the attitude of the public changes towards valuables and how ceaselessly the money market fluctuates. As for trade, it is composed entirely of cycles and motion. And yet the principle of continual motion was for some reason not included among the basic laws of the world, perhaps because it was crowded out by the widely acknowledged law of evolution. The law of evolution is a law of development, and this is not one and the same as the principle of continual flow and change. The political ties of a nation change depending on the international situation: alliances and agreements are replaced by discord and war. There is also an intermediate opinion that maintains that the process of change, although irreversible, remains more or less parallel to its initial stages.