激励很重要,因为它们以可预测的方式引导行为。
Joy sparks the urge to play, interest sparks the urge to explore, contentment sparks the urge to savor and integrate, and love sparks a recurring cycle of each of these urges within safe, close relationships.
I'm not afraid to take an idea to the extreme.
和对的人结婚,这将使所有事情都变得不同。
经济增长和环境责任之间的平衡是我们这个时代的决定性挑战。