Save Yourself
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A letter from Mohandas Gandhi to Adolf Hitler from 1939 asking to prevent the oncoming war.
(via Letters of Note: For the sake of humanity)
Who takes these pictures
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“This sentence is false.” —
The liar paradox
Trying to assign to this statement a classical binary truth value leads to a contradiction.
If “this sentence is false” is true, then the sentence is false, which would in turn mean that it is actually true, but this would mean that it is false, and so on ad infinitum.
Similarly, if “this sentence is false” is false, then the sentence is true, which would in turn mean that it is actually false, but this would mean that it is true, and so on ad infinitum.
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Nicola Tesla - a genius