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People are always blaming their circumstances for what they are. I don't believe in circumstances. The people who get on in this world are the people who get up and look for the circumstances they want, and, if they can't find them, make them.
If I had to live my life over again, I would live it as a trader of goods.
Science is a wonderful thing if one does not have to earn one's living at it.
If you wish to succeed, you should use perdistence as your good friend, experiece as your reference, prudence as your brother and hope as your sentry.