There are also two kinds of truths: truth of reasoning and truths of fact. Truths of reasoning are necessary and their opposite is impossible; those of fact are contingent and their opposite is possible.
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Nationality: German Type: Philosopher Born: July 1, 1646 Death: November 14, 1716 |
The price of imported oil in the US doubled between summer 2003 and summer 2005, reducing consumers' purchasing power by more than 1 per cent of gross domestic product.

