“Human history, like all great movements, was cyclical, and returned to the point of beginning. The idea of indefinite progress in a right line was a chimera of the imagination, with no analogue in nature. The parabola of a comet was perhaps a yet better illustration of the career of humanity. Tending upward and sunward from the aphelion of barbarism, the race attained the perihelion of civilization only to plunge downward once more to its nether goal in the regions of chaos.”

“The human race is doomed to sink back farther and farther into the primitive night ere again it begins its bloody climb upward to civilization.”

“It would be well to realize that the talk of ‘humane methods of warfare’, of the ‘rules of civilized warfare’, and all such homage to the finer sentiments of the race are hypocritical and unreal, and only intended for the consumption of stay-at-homes. There are no humane methods of warfare, there is no such thing as civilized warfare; all warfare is inhuman, all warfare is barbaric; the first blast of the bugles of war ever sounds for the time being the funeral knell of human progress… What lover of humanity can view with anything but horror the prospect of this ruthless destruction of human life. Yet this is war: war for which all the jingoes are howling, war to which all the hopes of the world are being sacrificed, war to which a mad ruling class would plunge a mad world.”

“The history of science, like the history of all human ideas, is a history of irresponsible dreams, of obstinacy, and of error. But science is one of the very few human activities — perhaps the only one — in which errors are systematically criticized and fairly often, in time, corrected. This is why we can say that, in science, we often learn from our mistakes, and why we can speak clearly and sensibly about making progress there.”

“Imagine what could be accomplished if only the human race would shed its humanity.”

“In the history of a soul’s evolution there is a critical point of the human incarnation that decides for us whether we stay there, go down or progress upwards. There is a knot of worldly desires impeding us; cut the knot by mastering desires and go forward. This done, progress is assured.”