Miguel de unamuno

Faith which does not doubt is dead faith.

Human beliefs, like all other natural growths, elude the barrier of systems.

We never know, believe me, when we have succeeded best.

We need God, not in order to understand the why, but in order to feel and sustain the ultimate wherefore, to give a meaning to the universe.

Life is doubt, and faith without doubt is nothing but death.

It is truer to say that martyrs create faith more than faith creates martyrs.

Anyone who in discussion relies upon authority uses, not his understanding, but rather his memory.

To love with the spirit is to pity, and he who pities most loves most.

Suffering is the substance of life and the root of personality, for it is only suffering that makes us persons.

Love is the child of illusion and the parent of disillusion.