@ Anthony 06:57 Feb 27
Yes. I can see exactly what you mean. I think the thing is that in English it is more idiomatic, or perhaps just more common in this context,, to express what is it in your heart to be be showing through your eyes. I.e. When we say "heart" it can be seen as over emotional or "slushy",so it is used in things like personal conversation, Valentines cards birthday cards or romantic novels. Its a matter of our linguistic and metaphorical choices I guess.
For example, as some of the answerers suggest, we also say soul, but we don't say heart in this analytical context very often. | 
peer agreement (net): +1