 In summary, Frege calls our attention to two problems, (i) the problem of the apparent difference in truth-value of corresponding belief attributions (such as (1) and (4)), and (ii) the problem of the difference in the cognitive significance of sentences composed in the same way of elements with the same reference (such as (5) and (6)). If distinct belief attributions indicate differences in cognitive value of the sentences in their that-clauses, then these two problems are really a single problem, presumably with a single solution.