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Small changes can have big effects when they help people break out of the poverty trap.
一个人永远无法到达家,但无论友好的道路在哪里交汇,整个世界都会暂时看起来像家。
I have always preferred working on concrete problems rather than abstract theories.
Positive psychology is as concerned with strength as with weakness, as interested in building the best things in life as in repairing the worst.
Leadership means making tough decisions with compassion and clarity.