Either it is raining or it is not (at a particular space and time)

Do I contradict myself? 
Very well, then, I contradict myself. 
(I am large, I contain multitudes.) 
    — Walt Whitman, “Song of Myself”

Vorrei e non vorrei
    — Zerlina, “Là ci darem la mano”, Don Giovanni

I can’t go on, I’ll go on
    — Samuel Becket, « The Unnamble »

Either it is raining or it is not states a simple principle known as the principle of non-contradiction : no contradiction is true. Following this principle, it cannot be the case that the proposition « It is raining » is true and the negation of this proposition, « It is not raining », is also true. The conj...

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