It did occur to me that the effect of good literature may be as dizzying as that of alcohol.
Why do all your friends talk like books?
Just as I could tell you about my first Andre Norton novel or my first L'Engle or my first Asimov, I could write a paragraph about how each of these writers influenced me, my writing, and my thoughts, and do to this day.
I did always think of Heinlein as a strict rationalist, although a dispassionate examination of his works doesn't support that.