zhì zhě qiān lǜ , bì yǒu yī shī 
		lit. a wise person reflecting a thousand times can still make a mistake (idiom); fig. nobody is infallible
		 
		
		
														
		
		
			 
		
				
		
			zhì zhě qiān lǜ , bì yǒu yī shī 
		lit. a wise person reflecting a thousand times can still make a mistake (idiom); fig. nobody is infallible