A: You must cultivate the enquiring mind, much as a farmer cultivates his crop if he wants a rich harvest. Everything must be doubted, everything investigated.
Q: Everyone enquires! Scientists never stop enquiring. I think we enquire too much.
A: Scientists and scholars enquire into everything except their own nature: they are cowards. To learn about oneself is easy, but to learn who and what one is, is fraught with difficulty and pain. They have no love of reason, in spite of their stupendously high salaries.
Q: Why is it that one person has faith in reason while another does not?
A: By that very fact! One who is reasonable will have faith in reason because it is reasonable to do so. Those who lack reason will not believe in it.