H. P. Grice, J. F. Thomson, and D. F. Pears on the implicata of 'decide'

Deciding: decision Ethics [Greek prohairesis, decision, from pro, before in the sense of temporal and preferential priority + hairesis, choosing] In Aristotle’s ethics, the origin of action. His theory of decision is viewed as a predecessor of the modern theory of will. Choice may be based on emotion and appetite, while prohairesis is rational choice. Decision is a mental act that combines both thinking and desiring and comprises both a rational desire for some good as an end in itself and deliberation about how to achieve the end. It is an impulse following upon a judgment reached by deliberation. Action or decision can be the outcome of practical reason in deliberation. “For it is our decision to do what is good and bad, not our beliefs that make the characters we have.” Aristotle, Nicomachean Ethics