解释：话说得太甜蜜动听，说话者就必定别有用心。

Stop being afraid of what could go wrong and start being excited about what could go right.

The principles of conditioning apply equally to all species.

Give a man a fire and he's warm for a day, but set fire to him and he's warm for the rest of his life.

真正的进步不仅仅以利润来衡量，还以我们对社会的积极影响来衡量。