Kindness is a power, no doubt. Off-the-cushion, kindness alone could transform the human-made world. May that be so.
On-the-cushion, kindness supports the tranquil clarity that is possible and elicits depth in a meditation sitting. To avail oneself of both clarity and depth, one must soften and open. To do so is to hold oneself in kindness, hold oneself in vulnerability, and hold oneself in truth.