Language is not only the vehicle of thought, it is a great and efficient instrument in thinking.
I think once I made up my mind that I was allergic to alcohol, and that's what I learned, it made sense to me. And I think it was kind of pointed out that you know if you were allergic to strawberries, you wouldn't eat strawberries. And that made sense to me.
I don't think people who have children are acting selfishly or unselfishly. Having a child who'll be loved, to parents who love each other, is the important thing.