3d: It's used to make a point by a writer keen to back Descartes (6,9)
19d: Brought back head of languages to help over manuscript of poor quality (6)
Thanks in advance...
My first question on here- Happy New Year all. I'm struggling with Last 4 on Standard cryptic, must have some wrong somewhere.. Fuel for flight (7) - Kerosene? But why flight apart from eros? Tugboat...