Out of them I have enjoyed some of the concepts of Hobbes and Locke, but I prefer the older Philosophers like Aristotle, or even Plato. Though my favorite is Aristotle

I love reading Aristotle due to all his works on understanding Life, nature, everything. He really tried to explain all things, and amusingly was pretty close on most. In fact I honestly feel some of his own definitions are better suited then the ones we give in this day and age.