Thats ok, im not all that interested in what he meant by the statement as I don't follow his teachings. Maybe you can ask him since you seem to be a follower of his.
To study is to know the texts,
To practice is to know your defilements,
To attain the goal is to know and let go.
- Ajahn Lee Dhammadharo
With mindfulness immersed in the body
well established, restrained
with regard to the six media of contact,
always centered, the monk
can know Unbinding for himself.
- Ud 3.5