Well back under this natural shelter, basined in the hollowed rock, a blessed pool of fair water lay unwrinkled by even a flutter of breeze.

The greater exposure to danger which these more adventurous spirits encountered and the constant struggles that these semi-human creatures must have had with definite enemies no less than with the forces of nature provided factors which rapidly weeded out those unfitted for the new conditions, and by natural selection made real men of the survivors.

I just made an update to the Wikipedia article on guerillas.

Old Proteus hath been knovvne to leaue his finny Heard, / And in their ſight to ſpunge his foame-beſpavvled beard. An adjective use.