In describing the people qualified to construct the Sanctuary and its instruments, the Torah repeatedly calls them "wise-in-heart" in referring to their skill. The craftsmanship these artisans possessed was more than technical, their wisdom was a special sort — that of the heart.
Some people are brilliant intellectually, their gifted minds master sciences, their logic and reasoning are unimpeachable. Despite these mind-gifts they may be cold, unsympathetic, unmoved by suffering. Others are kindlier, charitable, more emotional by nature, not particularly given to analysis and profound understanding. They may also be overindulgent, gullible, suspicious of or impatient with reasoning. While each sort has qualities, in extremes, or rather without tempering the initial and dominant characteristic, their deficiencies are grave.
The ideal is the wise-in-heart, proper balance between emotion and thought, feeling and reason. The qualities of learning and study, intellectual vigor, the scholar ideal, have always been glorified by our people. No matter how sincere the heart's emotions, they must be channeled, harnessed, and used. Torah inspires the heart in its search. Without Torah the most sublime emotion may degenerate into bathos or sentimental banality.
Similarly, exalted as the intellect may be, it cannot exclusively express the fullness of man. Emotional balance gives warmth and human substance to the mind's achievements. In Jewish terms it means that the true scholar, the disciple of Torah, is endowed with the emotions of love and awe of the Creator, sympathy for the lowly, affection for mankind. Such a person, the wise-in-heart, is qualified to create a Sanctuary for G‑dliness wherever he goes.
-adapted from www.chabad.org
