Don't settle for what the old masters found,
seek what they sought.
Kukai (774-835CE), Founder of Shingon, Japanese Poet, Artist, Philosopher, Religion Scholar, Teacher
Profile on Wikipedia
Also of interest: Ron's Green's "Kukai, Founder of Japanese Shington Buddhism"
In addition, see: Hiroyuki Kachi, "Tokyo Show Gathers Kukai Buddhist Art Treasures", The Wall Street Journal, July 20, 2011. This exhibition at the Tokyo National Museum, closed September 25, 2011.
Kukai on FaceBook