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The principles of conditioning apply equally to all species.

Writing is not about being clever. It's about being honest.

If you’re not moving forward, you’re falling behind.

建筑是一種藝術，是對生活的藝術。

Purchase the most recent tourist guidebook to your home town or region. You’ll learn a lot by playing the tourist once a year.

科學要求一個人付出他的一生。