Full Idea
In Davidson's earlier approach, intentional action requires causation by reasons.
Gist of Idea
Early Davidson says intentional action is caused by reasons
Source
report of Donald Davidson (Action, Reasons and Causes [1963]) by Rowland Stout - Action 8 'Weakness'
Book Reference
Stout,Rowland: 'Action' [Acumen 2005], p.123
A Reaction
A very Kantian idea, and one that seems to bestow causal powers on something which I take to be highly abstract. Thus Davidson was wrong (but in a nice way).