It's hard to strike a balance between keeping an open mind and being a sucker.

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• There's a difference between being open-minded & having a hole in your head.
  - Tom...
• An open mind gathers
  no dust...
• In the years since our arrival, we have foolishly disrupted so many of Planet's ecosystems that entire species may vanish without our ever having understood,
  or even known them. We must halt this plunder, and...