364. To gain a clear idea of the zeal in good persons and the zeal in evil ones, and of the difference between them, it is necessary to form some concept of the internal and external elements in people. To do this, let us take a common concept respecting these, because we mean it also for common folk. Let us present it by the illustration of a nut or almond and their kernels. The internal elements in good people are like kernels within in their undamaged and good state, enclosed in their normal and native shell. But altogether differently in evil people, their internal elements are like kernels either too bitter to be edible, or too rotted or wormy; while their external elements are like casings or shells either like their native ones, or reddish like shellfish, or polychromatic like rainbow-stones*. That is how their external elements appear, in which lie concealed the internal ones just described. It is the same with the two kinds of zeal in people. * A term formerly associated with iridescent stones and prismatic crystals of various types.