Quote by Gottfried Leibniz
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.
Summary
This quote highlights the distinction between two types of truths: truths of reasoning and truths of fact. Truths of reasoning are based on logical reasoning and are necessary, meaning their opposite is impossible to conceive. On the other hand, truths of fact are contingent upon specific circumstances and are not necessarily universally true. Their opposites are possible and can vary based on different situations. The quote suggests that while truths of reasoning are fixed and objective, truths of fact are more subjective and dependent on context.