Come quickly, I'm drinking stars!
Dom Pérignon is rumoured to have shouted those words out his window upon tasting Champagne.
Dom Pierre Pérignon (c. 1638–14 September 1715) was a French Benedictine monk who made important contributions to the production and quality of Champagne wine in an era when the region's wines were predominantly still and red. The famous champagne Dom Pérignon, the préstige cuvée of Moët & Chandon, is named after him.
The first appearance of that quote appears to have been in a print advertisement in the late 19th century - thus, not a direct quote.
While the Dom did work tirelessly and successfully to improve the quality and renown of the still wines of Champagne, he did not invent sparkling wine, nor was he the first to make champagne. Indeed he worked hard to prevent a secondary fermentation which was seen as a fault and most likely to break the wine bottles.There is documentary evidence that sparkling wine was first intentionally produced by English scientist and physician Christopher Merret.
A major proponent of the misconceptions surrounding Dom Pérignon came from one of his successors at the Abbey of Hautvillers, Dom Groussard, who in 1821 gave an account of Dom Pérignon "inventing" Champagne among other exaggerated tales about the Abbey in order to garner historical importance and prestige for the church. The myths about Pérignon being the first to use corks and being able to name the precise vineyard by tasting a single grape likely originated from Groussard's account.
Prior to blending he would taste the grapes without knowing the source vineyard to avoid influencing his perceptions. References to his "blind tasting of wine" have led to the common misconception that Dom Pérignon was blind.
Contrary to popular belief, Dom Pérignon did not introduce blending to Champagne wines but rather the innovation of blending the grapes prior to sending them to press.
Now you know.