וַאֲנִ֣י ׀ הָיִ֣יתִי מֵבִ֗ין וְהִנֵּ֤ה צְפִיר־הָֽעִזִּים֙ בָּ֤א מִן־הַֽמַּעֲרָב֙ עַל־פְּנֵ֣י כָל־הָאָ֔רֶץ וְאֵ֥ין נוֹגֵ֖עַ בָּאָ֑רֶץ וְהַ֨צָּפִ֔יר קֶ֥רֶן חָז֖וּת בֵּ֥ין עֵינָֽיו׃
And as I was considering, behold, a he-goat came from the west over the face of the whole earth, and touched not the ground; and the goat had a conspicuous horn between his eyes.
Rashi on Daniel
and it did not touch the ground He resembled one skipping in the air.