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Buying tools: Start by buying the absolute cheapest tools you can find. Upgrade the ones you use a lot. If you wind up using some tool for a job， buy the very best you can afford.

The best traders are those who can control their emotions.

Innovation is not just about creating something new; it's about solving real problems in ways that matter.

科幻小說是思想的文學，而思想才是最重要的。