Einstein called Chinese people 'filthy, obtuse' in his diary

A book compiling Albert Einstein's diaries on his tour of Asia in the 1920s has claimed the scientist described the Chinese as "industrious and filthy" with "spiritless and obtuse" children. However, according to the author, Einstein called the Japanese "unostentatious, decent, altogether very appealing", remarking that "intellectual needs of the nation seem to be weaker than their artistic ones".