The measure in the flesh is the translation of a vertical law into appetite, fatigue, posture, and the use of the body. A doctrine that never reaches the body remains a private entertainment. The flesh is where the age does most of its work: through ease, stimulation, and the cult of sensation. A man who leaves his body to the age has already surrendered the terrain.
Young men split the matter. Some despise the body and live in talk. Some worship the body and call the worship discipline. Traditional use of the body is colder. The body is an instrument. It is trained, limited, and kept capable so that the higher measure can act through it. Vanity and neglect are both failures of command.
This commanded flesh is the residual form of the older traditional knowledge of the two natures of man. The lower nature is real. It is not sovereign. The man who puts the lower under the higher in the concrete facts of hunger, sleep, and sex already performs the residual act.
Put the measure in the flesh. Do not leave the body as a private exception to the law you claim. The residual act is to make appetite and fatigue obey the same criterion that orients the mind. Until the flesh obeys, the type is only a thought.