To understand psychology, observe behavior in its natural context.
要理解心理学，就要在自然环境中观察行为。
世界是一本书，不旅行的人只读了一页。
过去始终与我们同在，因为它滋养着现在。
The greatest sweetener of human life is Friendship. To raise this to the highest pitch of enjoyment, is a secret which but few discover.
The sustainable development of aquaculture requires the joint efforts of the government, enterprises, and research institutions.
