Syntactic Structures is an important work in linguistics by American
linguist Noam Chomsky, originally published in 1957. A short monograph of
about a hundred pages, it is recognized as one of the most significant and
influential linguistic studies of the 20th century. It contains the now-famous
sentence "Colorless green ideas sleep furiously", which Chomsky offered as an
example of a grammatically correct sentence that has no discernible meaning,
thus arguing for the independence of syntax (the study of sentence structures)
from semantics (the study of meaning).