Isaac Asimov Quotes
Gratitude is best and most effective when it does not evaporate itself in empty phrases.
Citations
Asimov, Isaac. Foundation. Gnome Press, 1951.
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Isaac Asimov was an American writer and professor of biochemistry at Boston University. He was known for his works of science fiction and popular science. Asimov was a prolific writer, and wrote or edited more than 500 books. He also wrote an estimated 90,000 letters and postcards.