People who don't see their nature and imagine they can practice thoughtlessness all the time are lairs and fools.
To have a body is to suffer.
Once you see your nature, sex is basically immaterial.
Those who remain unmoved by the wind of joy silently follow the Path.
As long as you're enthralled by a lifeless form, you're not free.
Not thinking about anything is Zen. Once you know this, walking, sitting, or lying down, everything you do is Zen.