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" Science is opposed to theological dogmas because science is founded on fact. To me, the universe is simply a great machine which never came into being and never will end. The human being is no exception to the natural order. Man, like the universe, is a machine. Nothing enters our minds or determines our actions which is not directly or indirectly a response to stimuli beating upon our sense organs from without. Owing to the similarity of our construction and the sameness of our environment, we respond in like manner to similar stimuli, and from the concordance of our reactions, understanding is born. In the course of ages, mechanisms of infinite complexity are developed, but what we call 'soul' or 'spirit,' is nothing more than the sum of the functionings of the body. When this functioning ceases, the 'soul' or the 'spirit' ceases likewise.
I expressed these ideas long before the behaviorists, led by Pavlov in Russia and by Watson in the United States, proclaimed their new psychology. This apparently mechanistic conception is not antagonistic to an ethical conception of life. "
― Nikola Tesla , Inventions, Researches and Writings of Nikola Tesla
45
" Until every soul is freely permitted to investigate every book, and creed, and dogma for itself, the world cannot be free. Mankind will be enslaved until there is mental grandeur enough to allow each man to have his thought and say. This earth will be a paradise when men can, upon all these questions differ, and yet grasp each other's hands as friends. It is amazing to me that a difference of opinion upon subjects that we know nothing with certainty about, should make us hate, persecute, and despise each other. Why a difference of opinion upon predestination, or the trinity, should make people imprison and burn each other seems beyond the comprehension of man; and yet in all countries where Christians have existed, they have destroyed each other to the exact extent of their power. Why should a believer in God hate an atheist? Surely the atheist has not injured God, and surely he is human, capable of joy and pain, and entitled to all the rights of man. Would it not be far better to treat this atheist, at least, as well as he treats us?
Christians tell me that they love their enemies, and yet all I ask is—not that they love their enemies, not that they love their friends even, but that they treat those who differ from them, with simple fairness.
We do not wish to be forgiven, but we wish Christians to so act that we will not have to forgive them. If all will admit that all have an equal right to think, then the question is forever solved; but as long as organized and powerful churches, pretending to hold the keys of heaven and hell, denounce every person as an outcast and criminal who thinks for himself and denies their authority, the world will be filled with hatred and suffering. To hate man and worship God seems to be the sum of all the creeds. "
― Robert G. Ingersoll , Some Mistakes of Moses
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" Study, along the lines which the theologies have mapped, will never lead us to discovery of the fundamental facts of our existence. That goal must be attained by means of exact science and can only be achieved by such means. The fact that man, for ages, has superstitiously believed in what he calls a God does not prove at all that his theory has been right. There have been many gods – all makeshifts, born of inability to fathom the deep fundamental truth. There must be something at the bottom of existence, and man, in ignorance, being unable to discover what it is through reason, because his reason has been so imperfect, undeveloped, has used, instead, imagination, and created figments, of one kind or another, which, according to the country he was born in, the suggestions of his environment, satisfied him for the time being. Not one of all the gods of all the various theologies has ever really been proved. We accept no ordinary scientific fact without the final proof; why should we, then, be satisfied in this most mighty of all matters, with a mere theory?Destruction of false theories will not decrease the sum of human happiness in future, any more than it has in the past... The days of miracles have passed. I do not believe, of course, that there was ever any day of actual miracles. I cannot understand that there were ever any miracles at all. My guide must be my reason, and at thought of miracles my reason is rebellious. Personally, I do not believe that Christ laid claim to doing miracles, or asserted that he had miraculous power...Our intelligence is the aggregate intelligence of the cells which make us up. There is no soul, distinct from mind, and what we speak of as the mind is just the aggregate intelligence of cells. It is fallacious to declare that we have souls apart from animal intelligence, apart from brains. It is the brain that keeps us going. There is nothing beyond that.Life goes on endlessly, but no more in human beings than in other animals, or, for that matter, than in vegetables. Life, collectively, must be immortal, human beings, individually, cannot be, as I see it, for they are not the individuals – they are mere aggregates of cells.There is no supernatural. We are continually learning new things. There are powers within us which have not yet been developed and they will develop. We shall learn things of ourselves, which will be full of wonders, but none of them will be beyond the na "
