In the first place, Descartes stands for the most explicit and uncompromising dualism between mind and matter.

Like all science, psychology is knowledge; and like science again, it is knowledge of a definite thing, the mind.

In conclusion we may say, in view of the confirmation that our study has given of the parallelism between individual and racial thought of the Self, that in the history of psychology we discern the great profile which the race has drawn on the pages of time.

The development of the meaning attaching to the personal self, the conscious being, is the subject matter of the history of psychology.

I have passed English medical examinations in Hong Kong... In my youth, I experienced overseas studies. The languages of the West, its literature, its political science, its customs, its mathematics, its geography, its physics and chemistry - all these I have had the chance to study.

I believe chemistry is based on the trust between two performers. What actually works is something intangible - being extremely comfortable in each other's presence.

It is the function of science to discover the existence of a general reign of order in nature and to find the causes governing this order. And this refers in equal measure to the relations of man - social and political - and to the entire universe as a whole.

What if I told you every single person in America - every single person on Earth - is African? With a small scrape of cells from the inside of anyone's cheek, the science of genetics can even prove it.