Now what?

• A number is the name of the set of all sets having that number of elements.
• Example: the number 1 is the name of the set of all sets having 1 element.
• Numbers exist: ∃Φ ∴ ∃{Φ}
• ∴∃ 0
• ∴∃ 1∴∃{Φ,0}∴∃ 2 etc.