Acceptance of the Unacceptable is the Greatest Source of Grace in this World. Eckhart Tolle Posted on February 8, 2017 by paulettemotzko “Acceptance of the unacceptable is the greatest source of grace in this world.” Eckhart Tolle High definition wallpaper image from Zedge. Compiled Paulette Motzko. February 8th 2017. 8:46 a.m.