Scintillating in its electric hues and bold orchestration of nuanced harmonies and contrasts, Frank Stella’s Double Concentric Square from 1978 is emblematic of Twentieth-Century Minimalism and represents one of the most stridently revolutionary and cogent achievements in the canon of twentieth-century Contemporary Art. Encapsulating Stella’s brilliant and incisive intellectual rigor as applied to the very tenets of painting itself, Double Concentric Square is stunningly beautiful in both its conceptual daring and searing sharpness of execution, presenting the artist’s unwavering control on dazzling display. The crisp regularity and rigid symmetry of the painting’s compositional configuration maintains direct simplicity and absolute claritys , harnessing a potent immediacy. At the same t.mes , the meticulously calibrated dispersions of subtle tonal values impact on the spatial and rhythmic sense of the painting, either drawing vision inwards or pushing it outwards, such that the gradating hues vibrate against each other within each square as well as against the symMetricas l halves of the composition. As the eye roves each successive right angle, viewers are treated to a resplendent fury of bold prismatic radiance that at once epitomizes the stark rationality of Minimalism while blazing with an irrepressibly expressive chromatic energy.

The sheer literalism of Stella’s canvas and absolute eschewing of illusionism with the predetermined Concentric Square format allowed the artist to focus on the material properties of the picture plane—pure color here reigns supreme in its elemental brilliance. The enduring power of the Concentric Square’s pictorial drama for the artist was reinforced by Stella’s later return to the format that he initiated in 1961-62 after a brief departure in form. While increasingly moving toward three-dimensionality in the mid-1970s, notably with his Polish Village series of shaped reliefs of 1970-73 and the Brazilian reliefs of 1974-75, Stella returned to his earlier Concentric Squares and brought renewed vigor and authority to his compositions. He furthermore executed his Concentric Squares on a grand scale in the mid-1970s; by expanding the size of the canvas while retaining the basic units of proportion and band-width as in the smaller pictures, Stella enhanced not only the impression of monumental proportions, but allowed for more subdivided, complex relations of color than in the earlier pictures. On a larger scale, Stella could explore a greater degree of variation within the same color wheel.

After a period of severe experimentation with shaped canvases and unexpected sculptural compositions, the return to the Concentric Squares in the mid-1970s re-invested the artist with a sense of mathematical control; as he stated, “The effect of doing it ‘by the numbers,’ so to say, gave me a kind of guide in my work as a whole. Everything else, everything that was freer and less sequential, had to be at least as good—and that would be no mean achievement. The Concentric Squares created a pretty high, pretty tough pictorial standard. Their simple, rather humbling effect—almost a numbings power—became a sort of ‘control’ against which my increasing tendency in the seventies to be extravagant could be measured” (the artist cited in Exh. Cat., New York, Museum of Modern Art (and travelling), Frank Stella 1970-1987, 1987, p. 44). With his full-scale retrospective exhibition at the Museum of Modern Art in 1970, at the age of 34 Stella became the youngest artist ever to receive such an honor, positioning the 1970s as a critical period in the artist’s career.

While de-emphasizing the painterly gesture archetypal of the Abstract Expressionist in favor of a flat, rectilinear geometric sameness, the edges of each line within the concentric square betray precise regularity, revealing the hand-painted nature of Stella’s ruled lines akin to the brushy outlines of Barnett Newman’s zips. Whereas the abstraction of his action painter antecedents embraced an impassioned immediacy, Stella’s painting is cool, calculated, and mathematical, exploring numerous possible chromatic variations within a given format. Opposite to the improvisational drama of the Abstract Expressionist theater, Stella turned to diagrammed, regulated patterns, a level of standardization that recalled his roots as a house-painter. During his first six months in New York, in 1958, Stella supported himself primarily by painting apartments; this experience remained a core element of his practice, as he decided to employ only the six primary and secondary colors readily available in commercial cans of house paint. This avoidance of chromatic decision paralleled the given nature of the square concentric format—solving many problems for Stella right out of the gate. Using the housepainter’s technique and tools provided a method of paint application that echoed the predetermined grid pattern, driving any illusionistic space or personal heroicism out of the painting in an effort to counter the rhetoric surrounding Abstract Expressionism. As the primaries and secondaries progress from the center to the perimeter of the painting, the concentric composition seems to simultaneously inhale and exhale, appropriating a three-dimensionality by its volumetric experimentations with color.

Working within the parameters of his favored Concentric Square format, Stella’s colors here radiate with extreme chromatic intensity. An inevitable oscillation occurs between reading the painting for its phenomenal perceptual effects in how it explores the beauty of lines, shapes, surfaces, color and their interstices, together with the conceptual rigor in how it follows devastatingly simple rules dictated by the shape and size of Stella's stretcher and brush. The bounds of the given rectilinear template allowed Stella to focus increased energy on experimentations in the color spectrum; in Double Concentric Square, the controlled boxes give way to extravagant kaleidoscopic brilliance. The authentic originality of Stella’s art, and the conviction with which he pursued its premises, was to provide a new challenge not only for American painting, but for all art at this pivotal mid-point of the last century. In the course of the 1960s and 1970s he would emerge as cartographer of one of the few genuinely new paths for the continued development of major non-figurative art.

弗蘭克・史蒂拉的《無題（雙同心正方形）》作於1978年，電彩迷眩的色澤耀目生輝，顏色編排藝高人膽大，集諧和與對比於一身，堪稱二十世紀極簡主義的標誌性力作，更代表當代藝術主流中最具衝擊力的顛覆創舉，以及最使人心悅誠服的輝煌成就。本作體現了史蒂拉充滿知性內涵和犀利觸覺的繪畫原則，箇中理念新穎獨到，處理手法入木三分，動人心魄，可見即使是這種令人眼花繚亂的表現方式，史蒂拉亦收放自如。作品構圖富含規律，對稱嚴謹，使畫面直觀簡練，明晰俐落，給人一氣呵成的緊湊感。精心鋪排的彩色方框層層輻射，賦予畫面空間和節奏，牽引視野逐漸聚斂或舒散，讓人感覺依序遞變的色框在各個方形、以及彼此對稱的兩個部分裡互相砥礪震顫。隨目光循著正確的角度次第移動，霓虹般的絢爛在觀者眼前燦然怒放，不單將極簡主義的理性光輝發揮到極致，色彩的表現力更是如熔岩般迸發不止。

史蒂拉強調畫布作為一件物品的純粹實在性，同時摒棄所有具象繪圖痕跡，以既定的同心方形構圖，凸顯媒材的特性——正如本作由繽紛明亮的顏色主宰。史蒂拉在1961至62年間開創同心方形系列，隨後在1970年代中期轉向立體創作，其中以1970至73年的「波蘭鄉村」系列及1974至75年的「巴西浮雕」系列最為知名；大概也是在這段時期，他重拾早年的同心方形系列，創作了一組「沙加緬度」大型繪畫，這次回歸令同心方形持久不衰的圖像感染力與日俱增。1970年代中期的同心方形畫尺幅更加宏偉，凝聚了煥然一新的活力，氣勢逼人。這些大型繪畫保留了以往較小型同心方形畫的基本比例和色框寬度，使作品更加震撼人心，同時使色彩之間的關係更加細膩、複雜。史蒂拉可以透過更大的畫布，在同一個由顏色組成的方塊中，更深入探索不同色彩的差異。

經過一段時期在不規則畫布及立體雕塑畫方面的不懈嘗試，史蒂拉在1970年代中期重新回顧同心方形系列，展示他在數學方面的靈敏觸覺。他曾表示，「『有系統的』創作為我歷年的作品提供了一個宏觀指引。其餘偏離整體、沒有系統性的自由作品必須至少能與之媲美，才能稱得上是好的作品，而這並非易事。同心方形系列奠定了頗為難以企及的繪畫準則。它們簡單、甚至稱得上是粗疏的視覺效果擁有一種幾乎可以麻醉人心的力量，對我在七十年代漸趨花巧的風格而言，這股力量就像可以量度的『克制力』」（引述自藝術家，紐約現代藝術博物館展覽及巡展圖錄《弗蘭克・史蒂拉 1970-1987》，1987年，頁44）。1970年，年僅34歲的史蒂拉在紐約現代藝術博物館舉行大型回顧展，成為享有這個殊榮的藝術家中最年輕的一位。這次回顧展也使1970年代成為史蒂拉藝術生涯的關鍵時期。