over the éléments. He will reflect, moreover, that 4 is symbolic 
of the stability of matter, while 5 expresses the same idca with 
regard to motion. At this stage the battery will appear as 
1-2-5-2-1. After due considération he will probably conclude 
that to split up the central 5 would tend to destroy the simplicity 
of his formula, and décidé to use it as it stands. The possible 
alternative would be to make a single knock the centre of his 
battery as if he appealed to the ultimate immutability of Kether, 
invoking that unity by placing a fourfold knock on either side of 
it. In this case, his battery would be 1-4-1-4-1. He will naturally 
hâve been careful to preserve the balance of each part of the 
battery against the corresponding part. This would be particularly 
necessary in an operation such as we hâve chosen for our example. 
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