This book originated in the notes of lectures given over a number of years in graduate courses at the University of Toronto and elsewhere.
The basic idea is to present the essentials of relativity from the
Minkowskian point of view, that is, in terms of the geometry of space-
time. This geometrical approach is used to some extent in all
expositions of relativity, but I have emphasised it more than is customary,
because it is to me (and I think to many others) the key which unlocks
many mysteries. My ambition has been to make space-time a real
workshop for physicists, and not a museum visited occasionally with a
feeling of awe.