Cellular structure has a permeable boundary for oxygen and nutrition to get in and carbon dioxide and waste to get out. The cell membrane that does this filtering is found in all living cells and separates the interior of the cell from the outside environment. It consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
Even after fresh carrots are pulled from the ground, they are still alive and continue to “breathe”. If this respiration process continues in a breathable environment, unprotected from the drying effects of the air, they will droop. When a carrot begins to droop my home-schooled children and I learned that putting it in water over night to restore its turgor pressure will also restore its snap.
Humans also depend on a porous filter like this for building, restoring, reinvigorating, and preserving our body with oxygen and nutrients and for removing carbon dioxide and waste to prevent weakness, decline and droop. In this same way our mind and spirit need semipermeable filters for nourishment of the good and elimination of the bad. Some of these filters are, but not limited to:
Nourishment Elimination
Truth Threat
Honesty Manipulation
Trust Deception
Kindness Condemnation
Benefit Oppression
Since communication begins with me, the things I talk to myself about must be subject to functional filters to successfully practice in with the good and out with the bad if I want to be a healthy, nurtured organism that relates to other organisms in a satisfactory manner.