We risk great peril if we kill off this spirit of adventure, for we cannot predict how and in what seemingly unrelated fields it will manifest itself. A nation that loses its forward thrust is in danger, and one of the most effective ways to retain that thrust is to keep exploring possibilities. The sense of exploration is intimately bound up with human resolve, and for a nation to believe that it is still committed to a forward motion is to ensure its continuance.

It is difficult to be king when the gods are changing.

a soldier lives always for the next battle, because he knows that before it arrives impossible changes can occur in his favor.

About a billion years ago, long before the continents had separated to define the ancient oceans, or their own outlines had been determined, a small protuberance jutted out from the northwest corner of what would later become North America.

The master in the art of living makes little distinction between his work and his play, his labor and his leisure, his mind and his body, his information and his recreation, his love and his religion. He hardly knows which is which. He simply pursues his vision of excellence at whatever he does, leaving others to decide whether he is working or playing. To him he's always doing both.

Millions upon millions of years ago, when the continents were already formed and the principal features of the earth had been decided, there existed, then as now, one aspect of the world that dwarfed all other ... a mighty ocean, resting uneasily to the east of the largest continent, a restless ever-changing, gigantic body of water that would later be described as Pacific.

I have only one bit of advice to beginning writers: be sure your novel is read by Rodgers and Hammerstein.