For siege works against bold and venturesome men should be constructed on one plan, on another against cautious men, and on still another against the cowardly.

There will be no propriety in the spectacle of an elegant interior approached by a low mean entrance.

The construction of temples of the Ionic order to Juno, Diana, Father Bacchus, and the other gods of that kind, will be in keeping with the middle position which they hold; for the building of such will be an appropriate combination of the severity of the Doric and the delicacy of the Corinthian.

There are also in some places springs which have the peculiarity of giving fine singing voices to the natives, as at Tarsus in Magnesia and in other countries of that kind.

From prescription, in the case of hypaethral edifices, open to the sky, in honor of Jupiter Lightning, the Heaven, the Sun, or the Moon: for these are gods whose semblances and manifestations we behold before our very eyes in the sky when it is cloudless and bright.

In fact, all kinds of men, and not merely architects, can recognize a good piece of work.

All machinery is derived from nature, and is founded on the teaching and instruction of the revolution of the firmament.