There is an ecstasy that marks the summit of life, and beyond which life cannot rise. And such is the paradox of living, this ecstasy comes when one is most alive, and it comes as a complete forgetfulness that one is alive. This ecstasy, this forgetfulness of living, comes to the artist, caught up and out of himself in a sheet of flame; it comes to the soldier, war-mad in a stricken field and refusing quarter; and it came to Buck, leading the pack, sounding the old wolf-cry, straining after the food that was alive and that fled swiftly before him through the moonlight.

Avoid the unhappy ending, the harsh, the brutal, the tragic, the horrible -- if you care to see in print things you write. (In this connection don't do as I do, but do as I say.

Of her own experience she had no memory of the thing happening; but in her instinct, which was the experience of all mothers of wolves, there lurked a memory of fathers that had eaten their new-born and helpless progeny.

It is a simple matter to see the obvious, to do the expected. The tendency of the individual life is to be static rather than dynamic, and this tendency is made into a propulsion by civilization, where the obvious only is seen, and the unexpected rarely happens. When the unexpected does happen, however, and when it is of sufficiently grave import, the unfit perish. They do not see what is not obvious, are unable to do the unexpected, are incapable of adjusting their well-grooved lives to other and strange grooves. In short, when they come to the end of their own groove, they die.

As one grows weaker one is less susceptible to suffering. There is less hurt because there is less to hurt.

He became quicker of movement than the other dogs, swifter of foot, craftier, deadlier, more lithe, more lean with ironlike muscle and sinew, more enduring, more cruel more ferocious, and more intelligent. He had to become all these things, else he would not have held his own nor survived the hostile environment in which he found himself.

It is so much easier to live placidly and complacently. Of course, to live placidly and complacently is not to live at all.