On one occasion, the Buddha said to the monks this:
"No other form do I know, O monks, that so persists in obsessing the mind of a man as the form of a woman. The form of a woman persists in obsessing the mind of a man.
Looked at but cannot be seen - it is beneath form;
Listened to but cannot be heard - it is beneath sound;
Held but cannot be touched - it is beneath feeling;
These depthless things evade definition,
And blend into a single mystery.
In its rising there is no light,
In its falling there is no darkness,
A continuous thread beyond description,
Lining what can not occur;
Its form formless,
Its image nothing,
Its name silence;
Follow it, it has no back,
Meet it, it has no face.