evidence: Can you tell me where this was written by Mark Twain? I have not been able to locate this astute piece of advice in his novels or essays. [...] Mark Twain once said, "Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover." [...] In conclusion, QI has located no evidence of this saying before 1990, and believes that it is not connected to Mark Twain. The writer H. Jackson Brown, Jr. published it and credited his mother. QI has found no reason to doubt this attribution. Thanks for your engaging question.