Language. A same author may have quotes in two or more different languages. So for example 'Mahatma Gandhi' may be returned for language "en"(English), and "மஹாத்மா காந்தி" may be returned when the language is "ta" (Tamil).

Should return detailed author information such as birthday, death date, occupation, description etc. Only available at certain subscription levels.

Response is paged. This parameter controls where response starts the listing at

Response is paged. This parameter controls how many is returned in the result. The maximum depends on the subscription level.