हितोपदेश - सुहृद्भेद - अनुक्तमप्यूहति पण्डीतो

उदीरितोऽर्थः पशूनापि गृह्यते
    हयश्च नागाश्च वहन्ति देशिताः ।
अनुक्तमप्यूहति पण्डीतो जनः
    परेंगितज्ञानफला हि बुद्धयः ॥

- हितोपदेश, सुहृद्भेद

Any animal can understand instructions if they are explained elaborately. Elephants and horses can follow instructions very well. But only a wise man can understand what is not said. Perhaps, understanding other's mind is what is called as 'wisdom'

- Hitopadesha, Suhrudbheda