Full Idea
For domestic and public purposes, and all professional skills, no branch of a child's education has as big a range of applications as mathematics.
Clarification
'Skill' is the Greek word 'techné'
Gist of Idea
Mathematics has the widest application of any subject on the curriculum
Source
Plato (The Laws [c.348 BCE], 747a)
Book Reference
Plato: 'The Laws', ed/tr. Saunders,Trevor J [Penguin 1970], p.218