The method of psychology must be rigorously empirical.
心理学的方法必须严格经验化。
理解人类认知的关键在于理解符号是如何被操作的。
The future of agriculture lies in balancing productivity with environmental stewardship.
The night is a great ocean, but the stars are its waves.
心理学唯一有效的数据是可观察的行为。