Full Idea
Metaphysics should not be cosmically parochial. It should eschew tensed languages.
Gist of Idea
Metaphysics should avoid talk of past, present or future
Source
J.J.C. Smart (The Tenseless Theory of Time [2008], 1)
Book Reference
'Contemporary Debates in Metaphysics', ed/tr. Sider/Hawthorne/Zimmerman [Blackwell 2008], p.227
A Reaction
This is quite an engaging reason to be an eternalist (or B-theorist) about time. Presumably we can still believe in tensed time, as long as we recognise that metaphysics itself is a timeless subject.