165) appeals to our unwillingness to accept all odds on the truth of a contingent proposition
. Now, we might be tempted to risk a penny for the chance of winning a million pounds in case the sun does not rise tomorrow, but this does not show that we are uncertain about tomorrow's sunrise.
Applied to the consideration of the cognitive states of opinion and knowledge, this means that cognitive states involving contingent propositions
are qualitatively distinct from those involving necessary ones.
(53) It should be noted that having the feature of indemonstrablity is not a sufficient condition for self-evidence, for many propositions are indemonstrable without being self-evident, as is the case with contingent propositions
and false propositions.