Section 4. No tax shall be levied or appropriation of public money or property made, nor shall the public credit be used, directly or indirectly, except for a public purpose. No grant shall be made in violation of Section 4 of Article I of this constitution. No grant of public money or property shall be made except pursuant to standards provided by law. [Ren Const Con 1968 and election Nov 5, 1968; ren and am Const Con 1978 and election Nov 7, 1978]