The tangible world lost Sir Arthur Clarke today. I offer a portion of Bach’s Mass in B-Minor to accompany his departure. Both are icons.
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The first Clarke I ever read was The Fountains of Paradise. It is a marvelous novel along Clarke’s favorite themes of technological evolution vs. human development. Clarke’s writing style is sparse and direct, in perfect rhythm to his fantasy.
One of my favorite quotations of all time came from the lips of Arthur C. Clarke:
“When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong.” 
Think and always question, for in that question lies the future…