"we made it. we created it. we brought it forth from the night of the ages" means

In Rand's original drafts of Anthem, she opened the paragraph describing Equality 7-2521's invention of a primitive light bulb in a different manner: "The Light! . . . Here, under our hands, at our bidding, the light of the sky, the light to set the earth aglow, the Light smokeless and flameless and unquenchable!" (qtd. in Mayhew 35). The revised version states more succinctly, "We made it. We created it. We brought it forth from the night of the ages. We alone. Our hands. Our mind. Ours alone and only," thus shifting the emphasis away from the invention of the light itself and more closely to the achievement of Equality 7-2521.

Very useful. it is to learn because history repeats itself so learning about it those mistakes not happen again.