The rational modern men, led by Clarence Darrow, believed that behavior was a pure product of heredity and environment. Free will, apparently, has nothing to do with behavior.
Me, I stand wit the Jewish sages and the band Rush. Moses Maimonides (the Rambam) wrote:
If one desires to turn himself to the path of good and be righteous, the choice is his. Should he desire to turn to the path of evil and be wicked, the choice is his.” (Maimonides, “Laws of Repentance” 5:1) (From Rabbi Telushkin’s A Code of Jewish Ethics)
And Rush sang:
You can choose a ready guide in some celestial voice
If you choose not to decide, you still have made a choice
You can choose from phantom fears and kindness that can kill;
I will choose a path that’s clear –
I will choose free will.
Determinism is just too doctrinaire for me.