How can you prove whether at this moment we are sleeping, and all our thoughts are a dream; or whether we are awake, and talking to one another in the waking state?

A quote by Plato on thoughts

Plato

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1621 Truth is its own reward.
1277 You cannot conceive the many without the one.
409 No evil can happen to a good man, either in life or after death.
1251 You can discover more about a person in an hour of play than in a year of conversation.
1225 Wise men talk because they have something to say; fools, because they have to say something.

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