Suppose there was a person in need of heartwood. And while wandering in search of heartwood he’d come across a large tree standing with heartwood. But, passing over the heartwood and softwood, he’d cut off the bark and leave imagining it was heartwood. If a person with clear eyes saw him they’d say: ‘This gentleman doesn’t know what heartwood, softwood, bark, shoots, or branches and leaves are. That’s why he passed them over, cut off the bark, and left imagining it was heartwood. Whatever he needs to make from heartwood, he won’t succeed.’ …