Who said "Say in one word what others say in ten."?

Yamamoto Tsunetomo (1659–1719). Source: Hagakure, Book 1.

What is the original Japanese?

十言を一言で濟ます樣にと心掛け. Translated from the original Japanese by Spartan Surfers.

"Say in one word what others say in ten." Yamamoto Tsunetomo said it in Hagakure, Book 1. Translated from the original Japanese by Spartan Surfers.

"十言を一言で濟ます樣にと心掛け"

Original Japanese, Hagakure, Book 1. Japanese: Hagakure, vol. 1 (1937 printing), NDL digital text.

Yamamoto Tsunetomo (1659–1719). Samurai turned monk whose spoken reflections were written down as Hagakure, Hidden by Leaves.

Who said "Say in one word what others say in ten."?: Yamamoto Tsunetomo (1659–1719). Source: Hagakure, Book 1.
What is the original Japanese?: 十言を一言で濟ます樣にと心掛け. Translated from the original Japanese by Spartan Surfers.