@Compound Complex: "...those who feel certainty are stupid" - Bertrand Russell.
How many of our loved ones are living in a false state of certainty? They don't even claim to have truth, but rather, are IN it!
Hawkings and Boorstin appear to have understood our plight with waking family up when expressing the following sentiment: "The greatest enemy of knowledge is not ignorance; it is the illusion of knowledge."
It's like when you're dead. You don't know you are dead - it's only painful for others.
Same with being stupid.