"A southwest blow on ye and blister you all o'er!' 'The red plague rid you!' 'Toads, beetles, bats, light on you!' 'As wicked dew as e'er my mother brushed with raven's feather from unwholesome fen drop on you.' 'Strange stuff' 'Thou jesting monkey thou' 'Apes with foreheads villainous low' 'Pied ninny' 'Blind mole...' -The Caliban Curses"

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I believe that this hairless embryo with the aching, oversize brain case and the opposable thumb, this animal barely up from the apes, will endure --will endure longer than his home planet, will spread out to the other planets, to the stars, and beyond, carrying with him his honesty, his insatiable curiosity, his unlimited courage --and his noble essential decency. This I believe with all my heart.

— Robert A. Heinlein