Lu Jiuyan taught that the mind is the universe, and the universe is the mind. Mencius taught that all things are complete in oneself.
There is a universal principle that suffering is not good.
It seems universally comprehended that the only suffering which is not bad is that which is inflicted for the purpose of preventing another and less desirable degree of suffering. Surgery for the purpose of preventing a painful or deadly disease comes to mind.
Our aversion to suffering is innate and instinctive. We are born with a natural aversion to discomfort, and we maintain that posture until we pass away. The innate and instinctive comprehension that suffering is bad allows for a spontaneous guide for self preservation and social conduct.
The innate comprehension of the universal aversion to suffering is indicative of Lu Jiuyan’s theory that the mind is the universe, and likewise the thoughts of Mencius that all things are complete in oneself.
Or so it seems to me.