It may be obvious to many, but we should all pause to take note how we identify someone speaking the truth.

You can see he talks very plainly, straightforward and in simple terms. You also get the impression he's holding back somewhat and couching his speech to best effect for the listener, neither too technical nor too dumbed down. This is all because you're seeing a person trying best to communicate what is in their mind to the minds of other people.

These are simple things, but if you hold them up to what we are so used to hearing all day long, you'll note how uncommon it really is.