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If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.
Sustainability is not a choice anymore; it's a necessity for survival in today's world.
世界不是一个需要解决的问题,而是一个需要经历的神秘。
Stay committed to your decisions, but stay flexible in your approach.