In Summary photo album slide 10 Truths are elusive

In Summary photo album slide 11 Truths are what...

In Summary photo album slide 12 We can never be absolutely sure...

In Summary photo album slide 13 ...We can define...

In Summary photo album slide 14 Truth one: You exist

In Summary photo album slide 15 'I think, therefore I am'

In Summary photo album slide 16 Truth Two: The universe exists

In Summary photo album slide 17 Science the universe exists

In Summary photo album slide 18 Truth Three Causation exists