Self-preservation's a man's first duty. And natives don't mind dying, you know. They don't feel about it as Europeans do.
When the fact doesn't meet the theory then let go the theory.
Never tell all you know—not even to the person you know best.
The human face is, after all, nothing more nor less than a mask.
There is no greater mistake in life than seeing things or hearing them at the wrong time.
... evil was, perhaps, necessarily always more impressive than good.