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==Life & Career==

==Life & Career==

He was the grandson of [[Arai Kageyu]] (d. [[1609]]); his father was ''[[metsuke]]'' and [[Tsuchiya clan]] retainer [[Arai Masanari]] ([[1601]]-[[1682]]), and his mother, a daughter of the [[Fujiwara clan]] by the surname Sakai ([[1617]]-[[1678]]). Named Kinmi by his parents, he took on the scholarly pseudonym Hakuseki as an adult.

He was the grandson of [[Arai Kageyu]] (d. [[1609]]); his father was ''[[metsuke]]'' and [[Tsuchiya clan]] retainer [[Arai Masanari]] ([[1601]]-[[1682]]), and his mother, a daughter of the [[Fujiwara clan]] by the surname Sakai ([[1617]]-[[1678]]). Born in [[Kururi domain]] (centered at what is today Kimizu, [[Chiba prefecture]], he was named Kinmi by his parents, and only took on the scholarly pseudonym Hakuseki later, as an adult.

A copy of [[Nakae Toju|Nakae Tôjû's]] book ''Okina mondô'' ("Discussion with an Old Man") is said to have been the key inspiration for sparking Kinmi's interest in [[Neo-Confucianism]] when he was around 17 years of age. Finding the subject compelling, he began studying [[Zhu Xi]]-style Neo-Confucianism more extensively.

A copy of [[Nakae Toju|Nakae Tôjû's]] book ''Okina mondô'' ("Discussion with an Old Man") is said to have been the key inspiration for sparking Kinmi's interest in [[Neo-Confucianism]] when he was around 17 years of age. Finding the subject compelling, he began studying [[Zhu Xi]]-style Neo-Confucianism more extensively.