“Doubts are the innermost corner of our souls. One must not talk about his doubts, whatever they may be.”

“no one talks more passionately about his rights than he who in the depths of his soul doubts whether he has any”

“Remember-doubts may check pride, but too much doubt will keep you from doing what must be done.”

“One must know how to doubt.”

“We must doubt the certainty of everything which passes through the senses, but how much more ought we to doubt things contrary to the senses, such as the existence of God and the soul.”

“We must become so alone, so utterly alone, that we withdraw into our innermost self. It is a way of bitter suffering. But then our solitude is overcome, we are no longer alone, for we find that our innermost self is the spirit, that it is God, the indivisible. And suddenly we find ourselves in the midst of the world, yet undisturbed by its multiplicity, for our innermost soul we know ourselves to be one with all being.”