740 ILCS 80/9

All declarations or creations of trusts or confidences of any lands, tenements or hereditaments, shall be manifested and proved by some writing signed by the party who is by law enabled to declare such trust, or by his last will in writing; or else they shall be utterly void and of no effect: Provided, that resulting trust or trusts created by construction, implication or operation of law, need not be in writing, and the same may be proved by parol.