Philosophy = critical examination of pivotal concepts and beliefs

Concepts:	What we have (or can have) beliefs about
Beliefs:	What we think (or can think) to be true

Examples of Concepts:

money, dog, paper, sky, room, desk, person, telephone, ice

"The winter Olympics were in Greece in 2004."
"I have two hands."
"People should not kill one another."
"My wife loves me."
"Arkansas is south of Missouri."
"'Yesterday' was written by Paul McCartney."
"Eight is an even number."