Psychology should help us understand how we meet life's challenges.

No arts； no letters； no society； and which is worst of all， continual fear and danger of violent death； and the life of man， solitary， poor， nasty， brutish， and short.

跨行业、跨边境的合作对于解决气候变化这一复杂挑战至关重要。

I don’t believe in luck. I believe in preparation meeting opportunity.

试管婴儿的研究是出于帮助不孕夫妇的愿望。