Sakuma Shōzan

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In this Japanese name, the family name is Sakuma.

Sakuma Shōzan (1811-1864).

Sakuma Shōzan bronze statue, Kawanakajima, Nagano-shi, Nagano, Japan

Sakuma Shōzan, (佐久間象山 March 22, 1811–August 12, 1864) sometimes called Sakuma Zōzan, was a Japanese politician and scholar of the Edo era. He was the son of a samurai, and a native of Shinshu (信州) in today's Nagano-ken.

From the age of 23, he went to Edo and for 10 years studied Chinese sciences (漢学).

He then started to study Western sciences (Rangaku) at the age of 33, with the help of the Rangaku scholar Kurokawa Ryoan (黒川良安). He obtained in 1844 the "Huishoudelyk Woordboek", a Dutch translation of the encyclopedia written by the French Nöel Chomel. From the encyclopedia, he learnt how to make glass, and then magnets, thermometers, cameras and telescopes. The encyclopedia was later translated in Japanese by Utagawa Genshin (宇田川玄真) under the title 『厚生新編』.

In 1849, he learned about electricity, through the book of the Dutch scientist Van den Bergh, and created Japan's first telegraph, 5 years before the gift of such a telegraph by Commodore Perry in 1854. He also invented electric machines derived from the Elekiter.

From 1842, following an analysis of the defeat of China against Great Britain in the Opium War and the spread of Western influence in Asia, Sakuma Shozan actively proposed the introduction of Western military methods to the Bakufu and the establishment of maritime defense, through his book "Eight policies for the defense of the sea" (海防八策). His writing brought some fame, and he became the teacher of several future leaders of modernization (Yoshida Shoin, Katsu Kaishu, Sakamoto Ryoma). 　

When Yoshida Shoin became convicted 1853 for trying to get secretely onboard one of Perry's ships to study foreign ways, Sakuma was also sentenced by association to house arrest (蟄居), which he endured for 9 years. During the arrest, he continued to study Western sciences, and developed various electric machines based on the elekiter and the Daniell battery, Japan's first seismic sensor, as well as improvements to guns.

After his liberation, Sakuma Shozan continued to advocate opening Japanese ports to foreign traders, as well as reenforcing the Bakufu through collaboration with the Imperial administration (公武合体論).

Shōzan was assassinated for his opinions by some radical anti-foreigner groups (尊皇攘夷). The groups hired an assassin, or hitokiri named Kawakami Gensai who felled Shozan with one strike in broad daylight.

Sakuma Shozan coined the still used phrase, "Japanese ethics, Western science" (和魂洋才) as an illustration to the way Japan ought to handle modernization.^[1]

Shozan's son Miura Keinosuke was a member of the Shinsengumi.^[2]