hinged scalloped shell

As for conforming outwardly, and living your own life inwardly, I do not think much of that. Let not your right hand know what your left hand does in that line of business. It will prove a failure. Just as successfully can you walk against a sharp steel edge which divides you cleanly right and left. Do you wish to try your ability to resist distension? It is a greater strain than any soul can long endure. When you get God to pulling one way, and the devil the other, each having his feet well braced, – to say nothing of the conscience sawing transversely, – almost any timber will give way.

Source: Letters to a Spiritual Seeker