Hisatake Kato

• 21-seiki e no chiteki senryaku
• Joku no tetsugaku
• Kankyo rinrigaku no susume
• Katachi no tetsugaku
• Nijuisseiki no echika
• Oyo rinrigaku no susume
• Seikimatsu no shiso: Yutakasa o motomeru seitosei to wa nani ka = Thoughts on the eve of a new millenium
• Shinpo no shiso, seijuku no shiso
• Tetsugaku no shimei