Learn English – Difference between “always” and “all the time”

This has nothing to do with "all" and everything to do with "the".

You should use "the" wherever a definite article is required. ("The" is a definite article as opposed to "a/an" which are indefinite articles)

EXAMPLE

For example, if I say, "Let's read the book," I mean a specific book. If I say, "Let's read a book," I mean any book rather than a specific book.

Here's another way to explain it: The is used to refer to a specific or particular member of a group. For example, "I just saw the most popular movie of the year." There are many movies, but only one particular movie is the most popular. Therefore, we use the.

PS: You can say, "Lets read all the books." This is because you know which lot of books you are referring to. On the other hand, "Let's read all books" - sounds odd!!

For better or worse, the meaning of the word empathic has been forever tainted by its use in the science fiction and fantasy realm -- I would avoid using it interchangeably with empathetic just to avoid the connotation of spooky action at a distance. "Correct" and "right" aren't interchangeable either -- using language correctly isn't right if it raises unnecessary misunderstanding.