Many men talk like philosophers and live like fools. - Philip K. Dick

In one of the most brilliant papers in the English language Hume made it clear that what we speak of as 'causality' is nothing more than the phenomenon of repetition. When we mix sulphur with saltpeter and charcoal we always get gunpowder. This is true of every event subsumed by a causal law — in other words, everything which can be called scientific knowledge. "It is custom which rules," Hume said, and in that one sentence undermined both science and philosophy.

The odd thing in this world is that an eager-beaver type, with no original ideas, who mimes those in authority above him right to the last twist of necktie and scrape of chin, always gets noticed. Gets selected. Rises.

"You are certain you can keep the truth from her?" "Sure," Ed said confidently. "I know I can." "All right." The Old Man nodded slowly. "I will send you back. But you must tell no one." He swelled visibly. "Remember: you will eventually come back to me — everyone does, in the end — and your fate will not be enviable."