関武夫さんという自然を愛している方が生前持っていた森を、ご遺族の方が（財）埼玉県生態系保護協会に寄付したんですね。 In 19th century Europe, there was mathematical and philosophical dialogue about the precise mother nature of the natural figures. Henri Poincaré said that axioms can only be demonstrated within their finite application, and concluded that it is "the strength of the brain"... https://www.slideshare.net/slideshow/cureayu-reliable-ayurvedic-medicine-for-lifestyle-disorders/282503833