《战国策·齐三·孟尝君有舍人而弗悦》
如今让人做他不会做的，做不来就认为他没有才能；教人做他做不了的，做不来就认为他愚笨。
今使人而不能，则谓之不肖；教人而不能，则谓之拙。
Nowadays, one makes others do what they can't do, thinking that they are incompetent if they can't do it. One teaches others to do what they can't do, thinking that they are stupid if they can't do it.