"It's very important that we re-learn the art of resting and relaxing. Not only does it help prevent the onset of many illnesses that develop through chronic tension and worrying; it allows us to clear our minds, focus, and find creative solutions to problems.",
Thích Nhất Hạnh
Đề thi Olympic khu vực Nam Phi 2010 - Vòng 1 - Grade 10, 11, 12
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