Bahá’u’lláh wrote:

“I created thee rich, why dost thou bring thyself down to poverty? Noble I made thee, wherewith dost thou abase thyself? Out of the essence of knowledge I gave thee being, why seekest thou enlightenment from anyone beside Me? Out of the clay of love I molded thee, how dost thou busy thyself with another? Turn thy sight unto thyself, that thou mayest find Me standing within thee, mighty, powerful and self-subsisting.”
(The Hidden Words of Bahá’u’lláh – Part I, from the Arabic, #13)

“Noble have I created thee, yet thou hast abased thyself. Rise then unto that for which thou wast created.”
(The Hidden Words of Bahá’u’lláh – Part I, from the Arabic, #22)

“…all things, in their inmost reality, testify to the revelation of the names and attributes of God within them. Each according to its capacity, indicateth, and is expressive of, the knowledge of God…Man, the noblest and most perfect of all created things, excelleth them all in the intensity of this revelation, and is a fuller expression of its glory…”
(Gleanings from the Writings of Bahá’u’lláh, p. 178-179)

‘Abdu’l-Bahá said:

“In man there are two natures; his spiritual or higher nature and his material or lower nature. In one he approaches God, in the other he lives for the world alone. Signs of both these natures are to be found in men.  In his material aspect he expresses untruth, cruelty and injustice; all these are the outcome of his lower nature. The attributes of his Divine nature are shown forth in love, mercy, kindness, truth and justice, one and all being expressions of his higher nature. Every good habit, every noble quality belongs to man’s spiritual nature, whereas all his imperfections and sinful actions are born of his material nature…”
(Paris Talks by ‘Abdu’l-Bahá, p. 60)