过去是一个异国；他们在那里做事的方式不同。
寻求统一的物理理论是我们时代最伟大的智力冒险之一。
心理学必须植根于生物学才能成为真正的科学。
The most sustainable farm is the one that remains profitable year after year.
You think your pain and your heartbreak are unprecedented in the history of the world, but then you read.