One loves the sunset ,when one is so sad .
当一个人情绪低落的时候,他会格外地喜欢看日落。
创新不仅仅是创造新产品;它关乎重新构想整个客户体验。
Life is a constant struggle between being an individual and being a member of the community.
The only way to change behavior is through manipulation of reinforcement contingencies.