Scepticism, uncertainty--the position to which reason, by practicing its analysis upon itself, upon its own validity, at last arrives--is the foundation upon which the heart's despair must build up its hope.
-Miguel de Unamuno

Terribly tragic are our crucifixes, our Spanish Christs. They are indicative of a Christ not dead, but in agony. A Christ already dead, already returned to the earth, already at peace, a Christ dead and buried by others who are themselves dead, that is the Christ of the Holy Sepulchre, Christ lying in His tomb; but a Christ Whom one adores on the Cross is a Christ in agony, a Christ Who cries out: Consummatum est! And it is to this Christ--the Christ Who exclaims: "My God, My God, why hast Thou forsaken me?" (Matth. 27:46)--to Whom believers in agony pay homage. And among these are many who believe that they have complete faith, who have faith in faith.

To live, to struggle, to fight for life and to live by struggle, by faith, that means to doubt. [...] A faith which knows of no doubt is a dead faith. [...]

To believe what we do not see equals faith. So we have been taught in the catechism. To believe that which we do see--as well as that which we don't see--that is reason and science; and to believe that which we shall see--or shall not see--that is hope. And all this goes by the name of faith. I affirm, I believe, as a poet, as a creator, looking at the present; and I doubt, I struggle, I am in agony, as a human being, as a Christian, contemplating the unrealizable future, contemplating eternity.