Arthur Lydiard, Run to the Top (2nd ed. Auckland: Minerva, 1967, p. 4):
The first step to enjoying running — and anyone will enjoy it if he takes that first step — is to achieve perfect fitness. I don't mean just the ability to run half a mile once a week without collapsing. I mean the ability to run great distances with ease at a steady speed.
That's one hell of a first step. But the great coach is right: you will never enjoy running or understand its satisfactions if you jog around the block for 20 minutes four times per week. I find that only after one hour of running am I properly primed and stoked. And then the real run begins. Or as I recall Joe Henderson saying back in the '70s in a Runner's World column: Run the first hour for your body, the second for your self.