 For example, the third member of this sequence is true because there are 3 natural numbers (0, 1, and 2) that are less than or equal to 2; so the number 2 precedes the number of numbers less than or equal to 2. Frege’s strategy is to show that the general claim, that \(n\) precedes the number of numbers less than or equal to \(n\), holds for every natural number. So, given this intuitive understanding of the Lemma on Successors, Frege has a good strategy for proving that every number has a successor. (For the remainder of this subsection, the reader may wish to continue to think of \(\mathit{Precedes}^{+}\) in terms of \(\leq\).)