I feel like I could've skipped the first 3.5 chapters and been no worse off. This is based on the author's doctoral dissertation, so there's a lot of blah-blah, this-is-how-much-I-know filler.
Some of the information was good though. Reading it wasn't a complete waste of time (Reading anything is never a complete waste of time).
But, I must say, having read this, I know why Robin Williams' character in "Dead Poets Society" had his students rip out the introduction. I should've just jumped right into Tillich's own writing to begin with.