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The Philosophy of Princes is to dive into the Secrets of men, leaving the secrets of nature to those that have spare time.

George Herbert (1853). “The poetical works of George Herbert [and The synagogue, by C. Harvey.]. With life, critical diss., and notes, by G. Gilfillan”, p.327
The Philosophy of Princes is to dive into the Secrets of men, leaving the secrets of nature to those that have spare time.