Development of Western science is based on two great achievements: the invention of the formal logical system (in Euclidean geometry) by the Greek philosophers, and the discovery of the possibility to find out causal relationships by systematic experiment (during the Renaissance). In my opinion, one has not to be astonished that the Chinese sages have not made these steps. The astonishing thing is that these discoveries were made at all.

The height of stupidity is most clearly demonstrated by the individual who ridicules something he knows nothing about.

A man has to work so hard so that something of his personality stays alive. A tomcat has it so easy, he has only to spray and his presence is there for years on rainy days.

Small is the number of them that see with their own eyes and feel with their own hearts.

Intelligence and genius

Nothing happens unless something moves.

Even the scholars in various lands have been acting as if their brains had been amputated.