Matthew Arnold made the beautiful and true observation that: "The Greeks worshipped the holiness of beauty; the Jews found beauty in holiness".
It can similarly be said that the Greek philosophers worshipped the holiness of truth; the Jewish sages found truth in holiness alone.
An exquisite solution to a mathematical problem, a glorious symphony, a breathtaking work of art or of poetry are all part and parcel of "the world of falsehood." They can carry us to "the world of truth," if we permit them to enjoin us, and them with the greatness or our Creator and the potential of our Higher Selves to bring holiness into the world.
To the Jewish Mind, if something can be perceived as holy, then it is by definition both beautiful and true. And if cannot be perceived as holy, than it can neither be beautiful, nor true.
Tiferet is both Truth and Beauty It sounds like you are speaking of the Kabbalistic sefirah attribute of Tiferet which is both Truth, Beauty and Compassion. It is the harmony of lovingkindness (Chesed) and Gevurah (restraint, discipline, boundaries, strictness, strength).
It is the sefirah of Yaakov (Jacob) Our forefather who balanced the lovingkindness of Avraham and the restraint of Yitzchak.
It is the center of the heart where Hashem's purest form, the purest part of our soul enters the world. That is why hashem wants the heart. He wants us to make room in our heart for the purest part of the soul he gave us to come through and build a dwelling place for him on the earth.
Through expression in work, art, prayer, relationships.
We are called B'Nei Yisrael, Yaakov's other name. Therefore we are called B'Nei Tiferet. Children of Beauty and Truth and Compassion. Offering Compassion to the world helps things arrive at beauty and truth. Sometimes more boundaries are needed. Sometimes more love.