And what country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance? Let them take arms. The remedy is to set them right as to facts, pardon and pacify them. What signify a few lives lost in a century or two? The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants.
Sunday, September 15, 2019
An interesting video of echolocation, mostly used by blind folk but certainly something to be aware of even if you see just fine.
quite impractical in cities with 85-9db background noises, but in the country or the woods-and eyeopener.
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