Punctuation centuries meant that a standard system of punctuation was urgently required." The introduction of a standard system of punctuation has also been attributed to the Venetian printers Aldus Manutius and his grandson. They have been credited with popularizing the practice of ending sentences with the colon or full stop, inventing the semicolon, making occasional use of parentheses and creating the modern comma by lowering the virgule. By 1566, Aldus Manutius the Younger was able to state that the main object of punctuation was the clarification of syntax. By the 19th century, punctuation in the western world had evolved "to classify
Rose is a rose is a rose is a rose Rose is a rose is a rose is a rose The sentence "Rose is a rose is a rose is a rose." was written by Gertrude Stein as part of the 1913 poem "Sacred Emily", which appeared in the 1922 book "Geography and Plays". In that poem, the first "Rose" is the name of a person. Stein later used variations on the sentence in other writings, and "A rose is a rose is a rose" is among her most famous quotations, often interpreted as meaning "things are what they are", a statement of the law of identity, "A is A".