Was the Buddha a human being?

Prince Siddhattha was a human being. On the night that he realized supreme enlightenment he became a Buddha, and from that moment onwards was a human being in the normal meaning of that term—no longer. To uninitiated eyes, the Buddha would have appeared as an immensely charismatic and commanding religious leader, one who died a normal human death at the age of eighty. Those with more developed faculties, however, were aware that no external appearance, no words, concepts or categories could come anywhere near to expressing the marvellous and undying nature of his Buddhahood.