Actually he leaves me a bit confused. I like to read about some spiritual practices, and if you want to practice, it will not help to read what he says.
He absolutely shuns every spiritual teacher and practices, doesn't endorse meditation, or any other thing. So if you want to meditate, or other form of control, and read his words, they will only confuse your head.
He spent a great part of his life looking for illumination, practicing yoga and meditation. Then one day he claimed to be changed by an intense experience, but he claims it had nothig to do with the years of practice.
I think he wouldn't call himself spiritual.