  In seeking to arrive at a theory of ``quantum gravity'', one faces several
choices among alternative approaches. I list some of these ``forks in the
road'' and offer reasons for taking one alternative over the other. In
particular, I advocate the following: the sum-over-histories framework for
quantum dynamics over the ``observable and state-vector'' framework; relative
probabilities over absolute ones; spacetime over space as the gravitational
``substance'' (4 over 3+1); a Lorentzian metric over a Riemannian
(``Euclidean'') one; a dynamical topology over an absolute one; degenerate
metrics over closed timelike curves to mediate topology-change; ``unimodular
gravity'' over the unrestricted functional integral; and taking a discrete
underlying structure (the causal set) rather than the differentiable manifold
as the basis of the theory.
  In connection with these choices, I also mention some results from unimodular
quantum cosmology, sketch an account of the origin of black hole entropy,
summarize an argument that the quantum mechanical measurement scheme breaks
down for quantum field theory, and offer a reason why the cosmological constant
of the present epoch might have a magnitude of around $10^{-120}$ in natural
units.
