Let us then consider the proposition, “Believing something can not merely consist in saying that you believe it, you must say it with a particular facial expression, gesture, and tone of voice.” Now it cannot be doubted that we regard certain facial expressions, gestures, etc. as characteristic for the expression of belief. We speak of a “tone of conviction”. And yet it is clear that this tone of conviction isn't always present whenever we rightly speak of conviction wherever we should say there was conviction. “Just so”, you might say, “this shews that there is something else, something behind these gestures, etc. which is the real belief as opposed to mere expressions of belief.” ‒ ‒ “Not at all”, I should say, “many different criteria distinguish, under different circumstances, cases of believing what you say from those of not believing what you say.” There may be cases where the presence of a sensation other than those bound up with gestures, tone of voice, etc. distinguishes meaning what you say from not meaning it. But sometimes what distinguishes these two is nothing that happens while we speak, but a variety of actions and experiences of different kinds before and after.