A joy that's shared is a joy made double.
Manners make often fortunes.
The use of butterflies is to adorn the world and delight the eyes of men, to brighten the countryside, serving like so many golden spangles to decorate the fields.
A pound of worry won't pay an ounce of debt.
Learning makes the wise wiser and the fool more foolish.
Algebra is the metaphysics of arithmetic.