“All things are lawful for me,” but not all things are beneficial. “All things are lawful for me,” but I will not allow myself to be dominated by anything.
You say, “I am allowed to do anything”—but not everything is good for you. And even though “I am allowed to do anything,” I must not become a slave to anything.
“All things are lawful for me,” but not all things are expedient. “All things are lawful for me,” but I will not be brought under the power of anything.