[chezlaw]

I think in terms of belief and am wondering if thought are different in any important way.

I view beliefs as either existing or not and they do not have degress of strength. In your example:

'I have a strong believe that Capetown is the capital of SA'
is better expressed as
'I believe it is highly likely that capetown is the capital of SA'

If another belief leads to a loss of confidence then that old belief is modified to

'I believe it is possible that capetown is the capital of SA'

So, like you say for thoughts, you cannot be unsure about your beliefs at the time you are holding them. Are we talking about the same thing?

chez