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Philosophy since the Enlightenment, by Roger Jones. 4-way Venn Diagram generator.

Biology

These Exploding Droplets of Glass Are a Bewildering Quirk of Physics. An Essay by Einstein. "How strange is the lot of us mortals!

An Essay by Einstein

Each of us is here for a brief sojourn; for what purpose he knows not, though he sometimes thinks he senses it. But without deeper reflection one knows from daily life that one exists for other people -- first of all for those upon whose smiles and well-being our own happiness is wholly dependent, and then for the many, unknown to us, to whose destinies we are bound by the ties of sympathy. A hundred times every day I remind myself that my inner and outer life are based on the labors of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving... "I have never looked upon ease and happiness as ends in themselves -- this critical basis I call the ideal of a pigsty.

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Chemestry

Psychology. Math, Physics. Technology. History. Philosophy. Astronomy.