What is God-given is called nature; to follow nature is called Tao (the Way); to cultivate the way is called culture. Before joy, anger, sadness and happiness are expressed, they are called the inner self; when they are expressed to the proper degree, they are called harmony. The inner self is the correct foundation of the world, and the harmony is the illustrious Way. When a man has achieved the inner self and harmony, the heaven and earth are orderly and the myriad of things are nourished and grow thereby.
Thoughts are no more than electrical surges in the brain. Sexual arousal is no more than a flow of chemicals to certain nerve endings. Sadness is no more than a bit of acid transfixed in the cerebellum. In short, the body is a machine, subject to the same laws of electricity and mechanics as an electron or clock.
Happiness is one pole, sadness is another. Blissfulness is one pole, misery is another. Life consists of both, and life is richer because of both. A life only of blissfulness will have extension, but will not have depth. A life of only sadness will have depth, but will not have extension.
What is "this drive"? It's the tendency to not simply accept things as they are but to want to think about them, to understand them. To not be content to simply feel sad but to ask what sadness means. To not just get a bus pass but to think about the economic reasons getting a bus pass makes sense. I call this tendency the intellectual.
On Man, on Nature, and on Human Life, Musing in solitude, I oft perceive Fair trains of images before me rise, Accompanied by feelings of delight Pure, or with no unpleasing sadness mixed.
There is a sadness at the back of life which some people do not attempt to mitigate. Entirely aware of their own standing in the shadow, and yet alive to every tremor and gleam of existence, there they endure.
When you are in relationship with people, in a thousand and one ways you are provoked, challenged, seduced. Again and again you come to know your pitfalls, your limitations, your anger, your lust, your possessiveness, your jealousy, your sadness, your happiness all moods come and go, you are constantly in a turmoil. But this is the only way to know who you are.
Change is certain. Peace is followed by disturbances; departure of evil men by their return. Such recurrences should not constitute occasions for sadness but realities for awareness, so that one may be happy in the interim.