A Dutch mathematician, Ludolph van Ceulen, spent a significant portion of his life calculating the first 35 digits of π using polygons. He was so dedicated to this work that the digits he calculated were inscribed on his tombstone.
荷兰数学家鲁道夫Ludolph van Ceulen 花了毕生精力，用多边形计算出 π 的前 35 位数字。他如此专注于这项工作，以至于他的墓碑上刻着他计算出的数字。