Institutes of the Christian Religion (1559)
Book 2 - God the Redeemer
Chapter 2 - Man deprived of freedom of choice
Sections 26-27 - Man's inability to will the good
Section 26 - Natural instinct seeking the good is not freedom of will
Even animals have this instinct, but it isn't free will.
The good is pleasing to us, yet we don't will or work toward it.
Section 27 - Our will cannot long for the good without the Holy Spirit
Romans 7:18-23; 2 Cor 3:5; Gen 8:21; John 8:34; Phil 2:13; Ps 51:10.