The Relationship Between Toleration and Pluralism

For Berlin is there a link between the more abstract philosophical notion of pluralism and the political value of toleration? Absolutely. It's very important for him that there should be the maximum degree of toleration or negative liberty as it calls it to allow people to explore different possibilities and to make their choices. Negative liberty is freedom from constraint but Berlin also has a concept of positive liberty. The basic sense of positive liberty is self mastery. That's to say positive liberty is the answer to the question who is in control? Is it me or is it somebody else? And it's important for Berlin that it should be me who is in Control of my own life and not some outside force.