Gene pool describes the sum of all genetic variations (alleles) within a species. Many variations is considered healthy for a population of a species, whereas little genetic diversity (as in a monoculture or due to inbreeding) is considered harmful.
... deals with his life up to the time of his settlement at Königsberg.
See Quabicker, Karl Rosenkranz (1899), and J Hutchison Stirling, The Secret of Hegel, part ...