"If anything should happen—before ‘tis done—may I trust that..."

Quote: 

If anything should happen—before ‘tis done—may I trust that all commas and periods will be placed and someone will complete my thoughts—This last should be the least difficult—since there are so many who think as I do—

Attribution: 

Lorraine Hansberry, undated. In To Be Young Gifted and Black: Lorraine Hansberry in Her Own Words. Adapted by Robert Nemiroff with an introduction by James Baldwin, p. 261. NJ: Prentice-Hall, 1969.