"From these observations we might be able to conclude that the White Whale for Ahab, and probably for MelviIIe himself is a symbol of the mysterious (Das Nicht-Ich), conscious subject evil Powet of nature or the Not-Me namely, of experience."

The English Society of Japan - Moby Dick as a Symbolic Myth. p.254 (p.4 of pdf) Koh Kasegawa