. . . approach Me not with lifeless hearts, defiled with worldly desires and cravings.

Bahá’u’lláh, The Persian Hidden Words 19

Blessed the lifeless one who is quickened through My reviving breaths.

Bahá’u’lláh, Tablets of Bahá’u’lláh, p. 16

Give ear unto this: Never shall mortal eye recognize the everlasting Beauty, nor the lifeless heart delight in aught but in the withered bloom. For like seeketh like, and taketh pleasure in the company of its kind.

Bahá’u’lláh, The Persian Hidden Words 10

The world . . . may, moreover, be likened unto the lifeless image of the beloved whom the lover hath sought and found, in the end, after long search and to his utmost regret, to be such as cannot "fatten nor appease his hunger.

Bahá’u’lláh, Bahá’í World Faith, p. 68

They are even as dead and lifeless, except him whom thy Lord, the Almighty, the Unconstrained, hath willed to exempt. Such a one is indeed of those endued with knowledge in the sight of Him Who is the All-Knowing.

Bahá’u’lláh, The Proclamation of Bahá’u’lláh, p. 76

Love gives life to the lifeless. Love lights a flame in the heart that is cold. Love brings hope to the hopeless and gladdens the hearts of the sorrowful.

‘Abdu’l-Bahá, Paris Talks, p. 179