元永定正 Sadamasa MOTONAGA（1922-2011）1922年生於日本三重縣。1955年加入位於關西的具體美術協會，其作品風格具詼諧與古怪感，其特殊的繪畫表現方式也使他以非定型藝術家的身分獲得大眾注目。元永定正自1964年於現代日本美術展中獲獎後，於各種國際展等開始活躍，而1983年獲頒日本藝術大賞，名至實歸地確立了日本代表性的抽象畫家地位。元永定正的創作領域跨越繪畫、素描、繪本、陶件、表演與舞台美術等，這些經歷也使他的創作風格富含力量。在這件作品中，能看見元永定創作時經常使用的元素：『色玉（Irodama）』，畫面中可見作者利用紅、藍、綠、橙等各色的球體，不斷地由橫向的開口落下，透過鮮明的色玉、簡單的線條與形狀，使本作品添加了開放感，以及令人能打從內心深處產生會心一笑的能量。

Born in 1922 in Mie Prefecture, Japan. In 1955, he joined the specific art association in Kansai, whose style was humorous and weird, and his special painting expression made him the public attention as a non-stereotyped artist. MOTONAGA, who won the prize at the Japan International Art Exhibition in 1964, was active in various international exhibitions. In 1983, he won the Japanese Art Awards and established the representative abstract painter status of Japan. MOTONAGA is the creative field across the painting, sketches, picture books, pottery pieces, performances and stage art, these experiences also make his creative style rich in strength. In this work, we can see the elements often used in the creation of MOTONAGA: "Irodama", the screen can be seen using the red, blue, green, orange and other colored sphere, constantly by the horizontal opening down, Through the distinctive color of jade, simple lines and shapes, so that this work adds a sense of openness, and people can play from the heart to produce a smile of energy.