Alexei Panshin Quote

Whether or not your actions are determined, you have to act on the assumption that you have free will. If you are determined, your attempt at free will loses you nothing. However, if you are not determined and you act on the assumption that you are, you will never attempt anything. You will simply be a passive blob that things happen to.

Chapter 11 (p. 153). - Rite of Passage (1968)