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The history of mankind is one of continuous development from the realm of necessity to the realm of freedom. This process is never-ending. In any society in which classes exist class struggle will never end. In classless society the struggle between the new and the old and between truth and falsehood will never end…
The heavens are enriched for the man of science with new stars, and he applies his knowledge to determine and foretel with accuracy their positions and movements. Natural philosophy, gradually delivered from the vague explanations of Descartes, in the same manner as it before was disembarrassed from the absurdities of…
My definition of the word believe means to accept an explanation of phys¬ ical phenomena without any experiential evidence. At the outset of my re¬ solve not only to do my own thinking but to keep that thinking concerned only with directly experienced evidence, I resolved to abandon completely all that I ever had been…
In general I would be cautious against … plays of fancy and would not make way for their reception into scientific astronomy, which must have quite a different character. Laplace's cosmogenic hypotheses belong in that class. Indeed, I do not deny that I sometimes amuse myself in a similar manner, only I would never…
There was a time – and very recently – when the idea of the possibility of learning the composition of the celestial bodies was considered senseless even by prominent scientists and thinkers. That time has now passed. The idea of the possibility of a closer, direct study of the universe will today, I believe, appear…
The relative interattractiveness invisibly operative between any two remote-from-one-another cosmic bodies, as compared to any other pair of cosmic bodies, equally distanced from one another, is proportional to the multiplicative product of the respective couple's masses, and the interattractiveness of any pair of…