March 28

…tests… do but cleanse the spotting of self from off the mirror of the heart, till the Sun of Truth can cast its rays thereon; for there is no veil more obstructive than the self, and however tenuous that veil may be, at the last it will completely shut a person out, and deprive him of his portion of eternal grace. 
- ‘Abdu’l-Baha  (‘Selections from the Writings of ‘Abdu’l-Baha’)