Daf yomi has just started one of the most abstruse sections of Pesahim known as Chanina Sgan haKohanim. The discussion is whether on erev Pesahim one may burn Teruma chametz and chullin chametz together. There is a biblical statement which requires us to guard our terumah so it does not become tumai.
In the middle of this complicated discussion, the Talmud cites a proof : if terumah wine can about to flow into chullin wine, one may use a tamei vessel to catch it in order to salvage the usable wine and not castle the terumah to avoid the loss of the usable chullin wine. Similarly it may be burned together so as not to cause a loss due to use of extra wood.
What a great lesson! No matter how intellectual or esoteric the learning becomes, we must always find the ethical, moral and practical lesson in our learning.