D. Marie Curie said, "I was taught that the way of progress was neither swift nor easy."
The direct quotation in this sentence is inside the parentheses. The direct quotation marks are used to show when a person begins speaking and ends speaking. We know this is a direct quote because of the quotation marks. When writing direct quotations it is important to write it character for character and not write any extra words or characters that were not in the original text.