Untruth is only another shape of Darkness. It is Darkness that leads downwards. Those who are possessed by Darkness, cannot see the bright regions of Heaven.
अनृतं तमसो रूपं तमसा नीयते ह्यधः। तमोग्रस्ता न पश्यन्ति प्रकाशं तमसाऽऽवृताः॥