doubt

 "Those who believe that they believe in God, but without passion in their hearts, without anguish of mind, without uncertainty, without doubt, without an element of despair even in their consolation, believe only in the God idea, not God Himself."

~Miguel de Unamuno

The awful grace of God

In our sleep, pain that cannot forget falls drop by drop upon the heart and in our own despair, against our will, comes wisdom though the awful grace of God.

~Aeshylys

reality

Reality is like radium, and can be borne only in very small quantities.

~Madeleine L'Engle