Warbler said:
maybe you elaborate what you mean by the word, heart?
I mean by Heart, the center (source) of all living.
Perhaps by heart most people only imagine a kind of "mechanical" piece that only plays the role of a pump. It's however the energetic source of your body, and then tell me where the heart takes its energy from... That's more the reply to that question I may call Heart actually.
To follow the idea of my previous post, I'd add that Heart's opposite concept is Ego, wich one is located in the liver justly where sits the emotional activity, wich acts on your humours through bile. Worth to notice liver, heart and brain are strongly connected, heart beeing the moderator.
I highly recommand you pursue your own researches if you're sincerely interested, and I promise you won't waste your time ! In the wait, if you want me to prove what I say, not only I will decline but I want you to know I just can't. We just can't intellectualize such realities and only the Heart can discern the truth from the lie. The mental, that makes occidentals so proud (and I'm one), can't catch this.
... All of this is about subtle energies that surround us, penetrates us, and combines the galaxy together.
Just listen to Yoda again (in ESB)... Or, if you don't want to give credit to a "fairy tale"... listen to Bruce Lee ! The words may be different but the idea remains the same.