"We strive, we dream of a perfect veil of butterflies, but they are not real. They are perfumes of memories left behind, they are a dream of how life should be. In a puff of wind, they flap away," the artist said in an interview to Bangkok post regarding his latest exhibition in Bangkok's national gallery.
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http://www.bangkokpost.com/arts-and-culture/art/246826/dreaming-of-clouds-of-butterflies

Video from the opening of David Gerstein's exhibition "Infinity" at Bangkok National gallery