心理学必须基于可观察的事实，而非推测。
The mind is a constantly changing flux of processes.
心灵是一个不断变化的过程流。
The elements of consciousness are to be discovered by careful experimentation.
The psychologist must describe, not explain.
心理学家必须描述，而非解释。
The method of psychology must be as exact as that of the physical sciences.
心理学的方法必须像自然科学一样精确。
The mind is a dynamic system of processes.
心灵是一个动态的过程系统。
Psychology must avoid all forms of mentalism.
心理学必须避免一切形式的心灵主义。
The elements of consciousness are to be studied in their pure form.
The study of consciousness must be free from all preconceptions.
对意识的研究必须摆脱一切先入之见。
The psychologist must be a strict empiricist.
心理学家必须是一个严格的实证主义者。
The mind is a stream of processes, not a collection of objects.