Popcorn Reads posted a superlative review of Quintessence.  Here was their conclusion:

Along with characters written with a lot of depth, the voyage, the fantastical creatures, and the land at the edge of the world are what make Quintessence sing off the page.  It’s one of those action-adventure novels that grabs you and will not let go, and I loved every nail-biting, heart-stopping moment of it!  It is sci-fi/fantasy at its best and I highly recommend it!

I don’t know if good reviews actually sell any more books, but they sure make me happy!