Dirk Graswinckel

He was a controversialist, who also rose to a high legal position (Fiscal of Holland) where he advised Descartes.

Maris liberi vindiciae attacked Burgus (Pietro Battista Borgo) writing for Genoese pretensions in the Ligurian Sea,[6][7] but also took on John Selden on the British claim to territorial waters.

[8] Selden's Mare Clausum had been published in an English translation in 1652, and he replied the following year with Ioannis Seldeni vindiciae secundum integritatem existimationis suae.

[9] In 1651 he published a work Placcaten, ordonnantien ende reglementen on the economics of regulation of the grain trade.

[10] Joseph Schumpeter argued that this was the first clear-cut statement that speculators had a role in the stability of commodity markets.