Humans have invented all kinds of symbols to communicate not only with other humans but more importantly with ourselves.

Humans have invented all kinds of symbols to communicate not only with other humans but more importantly with ourselves.

人类发明了各种各样的符号，不仅是为了与他人交流，更重要的是与自己交流。

-- José Luis Ruiz 乔斯·路易斯·鲁伊斯