“Life is doubt,And faith without doubt is nothing but death.”

“A faith which does not doubt is a dead faith.”

“Faith which does not doubt is dead faith. -Miguel de Unamuno, philosopher and writer (1864-1936)”

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

“The skeptic does not mean him who doubts, but him who investigates or researches, as opposed to him who asserts and thinks that he has found.”

“The vanity of the passing world and love are the two fundamental and heart-penetrating notes of true poetry. And they are two notes of which neither can be sounded without causing the other to vibrate. The feeling of the vanity of the passing world kindles love in us, the only thing that triumphs over the vain and transitory, the only thing that fills life again and eternalizes it.”

“If a person never contradicts himself, it must be that he says nothing.”