It is not known whether his insanity was due to natural causes, or to misuse of alchemical "remedies" - which often included toxic materials like sulphur, lead, mercury, arsenic, and antimony.
至今尚不清楚他变疯是自然原因所致，还是误服炼金丹所致——这些东西通常含有带毒物质，比如硫磺，铅，水银，砒霜和锑。
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