When Watts looked into the history of "the greatest painting of all time", he discovered that, for most of its life, the "Mona Lisa" remained in relative obscurity.

当瓦茨调查这幅有史以来最伟大的画作的历史时，他发现《蒙娜丽莎》在其生命的大部分时间里都处于相对默默无闻的状态。