Excerpt from "The Book of Understanding"

No religion has been courageous enough to say, "We know this much, but there is much we don't know; perhaps in the future we may know it. And beyond that, there is a space which is going to remain unknowable forever."

A true religion will have the humbleness to admit that only a few things are known, much more is unknown, and something will always remain unknowable. That "something" is the target of the whole spiritual search. You cannot make it an object of knowledge, but you can experience it, you can drink of it, you can have the taste of it - it is existential.

All these religions have been against doubt. They have been really afraid of doubt. Only an impotent intellect can be afraid of doubt; otherwise doubt is a challenge, an opportunity to inquire.

There is doubt, and doubt is not destroyed by believing. Doubt is destroyed by experiencing.

They say, believe. I say, explore. They say, don't doubt; I say, doubt to the very end, till you arrive and know and feel and experience. Then there is no need to repress doubt; it evaporates by itself. Then there is no need for you to believe.

You have to be again innocent, ignorant, not knowing anything, so that the questions can start arising again. Again the inquiry becomes alive, and with the inquiry becoming alive you cannot vegetate. Then life becomes an exploration, an adventure.

-OSHO