What is life? What is my place in it? What choices do these questions obligate me to make? More than a half-century after it burst upon the intellectual scene - with roots that extend to the mid-19th century - Existentialism's quest to answer these most fundamental questions of individual responsibility, morality, and personal freedom, life has continued to exert a profound attraction.

Conventional wisdom suggests there is a sharp distinction between emotion and reason. Emotions are seen as inferior, disruptive, primitive, and even bestial forces. These 24 remarkable lectures suggest otherwise-that emotions have intelligence and provide personal strategies that are vitally important to our everyday lives of perceiving, evaluating, appraising, understanding, and acting in the world.

"It doesn't take an Einstein to understand modern physics," says Professor Wolfson at the outset of these 24 lectures on what may be the most important subjects in the universe: relativity and quantum physics. Both have reputations for complexity. But the basic ideas behind them are, in fact, simple and comprehensible by anyone. These dynamic and illuminating lectures begin with a brief overview of theories of physical reality starting with Aristotle and culminating in Newtonian or "classical" physics.

Whether complete or only fragmentary, the 930 extant Dead Sea Scrolls irrevocably altered how we look at and understand the foundations of faith and religious practice. Now you can get a comprehensive introduction to this unique series of archaeological documents, and to scholars' evolving understanding of their authorship and significance, with these 24 lectures. Learn what the scrolls are, what they contain, and how the insights they offered into religious and ancient history came into focus.

What is our species' greatest invention? Medicine, computers, space travel? Not even close. The innovation that underlies each of our past achievements and those we still aspire to is language. Language is the ultimate invention of Homo sapiens - one that has allowed us to change the physical and social world around us in every conceivable way, and an invention that has fundamentally changed us, as well.