Real intelligence

उदीरितोऽर्थः पशुनापि गृह्यते हयाश्च नागाश्च वहन्ति देशिताः ।
अनुक्तमप्यूहति पण्डितो जनः परेङ्गितज्ञानफला हि बुद्धयः ॥ – हितोपदेश, सुहृद्भेद
Meaning : That which is enunciated clearly, is grasped by even animals, (just as) horses and serpents execute on orders.  The intelligent perceive even that which is unsaid.  Certainly the consequence of intelligence is, an understanding of the intent of others.