Brian Greene

One of the strangest features of string theory is that it requires more than the three spatial dimensions that we see directly in the world around us. That sounds like science fiction, but it is an indisputable outcome of the mathematics of string theory.

An independent state does not pay too dear a price for its independence in accepting the sufferings of war when it cannot avoid them; a state which has lost its independence may find at least some compensation in the fact that its protector procures for it peace with its neighbours.