An open, questioning mind is not regarded as a drawback to followers of the Buddha-dharma. However, a mind that says, “This is not part of my mental framework, therefore I don't believe it,” is a closed mind, and such an attitude is a great disadvantage for those who aspire to follow any spiritual path. But an open mind, which questions and doesn't accept things simply because they are said, is no problem at all.
–Ani Tenzin Palmo, from “Necessary Doubt,” Tricycle, Summer 2002. Special thanks to Philip Ryan at Tricycle for this quote.
James: This reminds me of the quote, "Minds are like parachutes. They only work when they're open." One of the reasons that I began to sour on Christianity was because of the insistence upon "blind faith." I never understood how using my mind to question the claims being made by adult leaders in my former church was giving into "Satan" when "God" was the one who gave me that brain, which is able to question in the first place!! I like the translation of "come and see" because it is an invitation to spirituality but coupled with an invitation to see for yourself. I was very impressed with that approach when I first began investigating Buddhism. It is a very science based approach to spirituality, which appealed greatly to me as one who was raised on the scientific method.
Seeing is believing as we say in the west and in many ways Buddha was an ancient scientist of the mind and perhaps the first psychiatrist. The teaching of cause and effect is very much a foundation of scientific inquiry. He was certainly compared to a doctor prescribing countless variations of the Dharma (medications) to each person based on their individual karmic needs. That said, let's get back to the psychiatrist analogy in specific. A psychiatrist knows that trust is vital to enabling the patient in believing that the specific treatment plan prescribed will be helpful to the patient. That means allowing the patient to ask questions about the process. That's because a psychiatrist/psychologist knows that if a person feels like they are doing something out of guilt, fear or blind faith it doesn't matter how helpful the therapy might be, the patient is simply not going to buy into the program.
Buddhism is a lot like psychological therapy program put forth by Buddha. He knew that being able to question his teachings was the only way people would fully consider what he taught without feeling forced into it and force is completely antithetical to the Dharma he revealed. Buddha was a great questioner as he dared question the great Brahmin priest class of his day, which was very rebellious. He took the power of religion out of the hands of the privileged few and gave it back to the masses. He was a Robin-hood of spirituality in a way. That great tradition of questioning phenomenon and experiences for oneself is to me what makes Buddhism such a respected tradition. It treats people like adults rather than children to be told what to think, believe and how to act.
He was not very interested in speculation and open-ended faith but rather faith, which is merely a step in-between ignorance and knowing for oneself. It is a pit-stop of sorts along the journey of experiential wisdom. The Great Awakened one said in the Kasibharadvaja Sutta of the Samyutta Nikaya that "Faith is the seed and practice is the rain" which is nothing near blind faith. He goes on further saying, "And wisdom is my yoke and my plough." Thus, without the wisdom (the plough) to prepare the fertile field (the mind) with experience the seed of faith will wither, dry up, die and be of no use. Faith in Buddhism is in large part more of a conviction to accomplish ones goals for oneself, rather than being a submission and obedience to others as is often the case with the monotheistic religions.