The sexual organ- the junction of important nerve extremities, particularly of the sympathetic and spinal nerves (the principal nerves of the abdomen) which, through their connection with the brain, are capable of enlivening the whole system – is in a sense the root of tree of life.
The practical principles of sexual health are not taught because the public regards the subject as unclean and indecent. Thus blinded, mankind presumes to clothe Nature in a veil because she seems to them impure, forgetting that she is always clean and that everything impure and improper lies in man’s ideas and not in Nature herself.
It is clear therefore that man, not knowing the truth about the dangers of misuse of sexual power, and being compelled to wrong practices by the nervous irritation resulting from unnatural living, suffers troublesome diseases in life and ultimately becomes a victim of premature death.”
The Holy Science Swami Sri Yukteswar 1894