“Trees which grow in places facing the course of the sun are not of porous fiber but are solid, being drained by the dryness... The trees in sunny neighborhoods, therefore, being solidified by the compact texture of their fiber, and not being porous from moisture, are very useful, so far as durability goes, when they are hewn into timber. The lowland firs, being conveyed from sunny places, are better than those highland firs, which are brought here from shady places.”
![“Leave a cavity behind the [wall] facings, and on the inside build walls two feet thick, made of red dimension stone or burnt brick or lava in courses, and then bind them to the fronts by means of iron clamps and lead. The beds and builds, all settling equally and bonded at the joints, will not let…” quote by Marcus Vitruvius Pollio](https://sms4smile.com/quotes/img-quotes/d76/marcus-vitruvius-pollio-7498_bed_leave-a-cavity-behind-the-wall-facings-a_5922.jpg)
![“The [engineer] should be equipped with knowledge of many branches of study and varied kinds of learning, for it is by his judgement that all work done by the other arts is put to test. This knowledge is the child of practice and theory.” quote by Marcus Vitruvius Pollio](https://sms4smile.com/quotes/img-quotes/afa/marcus-vitruvius-pollio-7498_art_the-engineer-should-be-equipped-with-kno_386834.jpg)
![“All these soft kinds [of stone] have the advantage that they can be easily worked as soon as they have been taken from the quarries. Under cover, they play their part well; but in open and exposed situations the frost and rime make them crumble, and they go to pieces. On the seacoast, too, the…” quote by Marcus Vitruvius Pollio](https://sms4smile.com/quotes/img-quotes/541/marcus-vitruvius-pollio-7498_advantage_all-these-soft-kinds-of-stone-have-the-a_406721.jpg)
![“[In the case of] dangerous exercise of other powers, not granted by the said compact, the states, who are parties thereto, have the right, and are duty bound, to interpose for arresting the progress of the evil.” quote by James Madison](https://sms4smile.com/quotes/img-quotes/a51/james-madison-373_arresting_in-the-case-of-dangerous-exercise-of-oth_63920.jpg)
