I like Charlie Chaplin because he was the name in classic silent cinematography and producer/director/star of one of the greatest satires of all time, The Great Dictator. Although he probably would have jumped on Oprah's couch if he were alive to do so.
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If you do just one thing in life, then you need to get out more and expand your horizons. Honestly, that one thing can't possibly take-up all your time.