Sex without pain is like food without taste
Sex should be a perfect balance of pain and pleasure. Without that symmetry, sex becomes a routine rather than an indulgence.
No kind of sensation is keener and more active than that of pain its impressions are unmistakable.
There is no more lively sensation than that of pain; its impressions are certain and dependable, they never deceive as may those of the pleasure women perpetually feign and almost never experience.
It is always by way of pain one arrives at pleasure.