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Richard Sylvan
open-in-new
<p>Richard Sylvan (13 December 1935 – 16 June 1996) was a New Zealand–born <a href="/facts/Philosopher/Hyvzc54m">philosopher</a>, <a href="/facts/Logician/8JnpJLtt">logician</a>, and <a href="/facts/Environmentalist/L1XexdzQ">environmentalist</a>. </p>