“Time obliterates the fictions of opinion and confirms the decisions of nature.”
De Natura Deorum – On the Nature of the Gods (45 BC)
Variant: For time destroys the fictions of error and opinion, while it confirms the determinations of nature and of truth.
Book II, section 2; translation by Francis Brooks
Variant: Time destroys the figments of the imagination, while confirming the judgments of nature.
Original
Opinionis enim commenta delet dies, naturae iudicia confirmat.
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Marcus Tullius Cicero 180
Roman philosopher and statesman -106–-43 BCRelated quotes

Ode on Crystals, st. 2 & 3 (24 January 2001).

http://www.mkgandhi.org/g_communal/chap17.htm
Posthumous publications (1950s and later)

January 30, 1991; page 395.
On the Troubles in Northern Ireland.
Diaries: In Power (1993)

As quoted in Philosophers of the Earth : Conversations with Ecologists (1972) by Anne Chisholm