“The accommodations within the city walls being thus multiplied as a result of the many floors high in the air, the Roman people easily find excellent places in which to live.”
Source: De architectura (The Ten Books On Architecture) (~ 15BC), Book II, Chapter VIII, Sec. 17
Context: With the present importance of the city [of Rome] and the unlimited numbers of its population, it is necessary to increase the number of dwelling-places indefinitely. Consequently, as the ground floors could not admit of so great a number living in the city, the nature of the case has made it necessary to find relief by making the buildings high. In these tall piles reared with piers of stone, walls of burnt brick, and partitions of rubble work, and provided with floor after floor, the upper stories can be partitioned off into rooms to very great advantage. The accommodations within the city walls being thus multiplied as a result of the many floors high in the air, the Roman people easily find excellent places in which to live.
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Vitruvius 203
Roman writer, architect and engineer -80–-15 BCRelated quotes

Birds (414 BC)
Context: Epops: You're mistaken: men of sense often learn from their enemies. Prudence is the best safeguard. This principle cannot be learned from a friend, but an enemy extorts it immediately. It is from their foes, not their friends, that cities learn the lesson of building high walls and ships of war. And this lesson saves their children, their homes, and their properties.
Chorus [leader]: It appears then that it will be better for us to hear what they have to say first; for one may learn something at times even from one's enemies.
(tr. Anon. 1812 rev. in Ramage 1864, p. 45 http://books.google.com/books?id=AoUCAAAAQAAJ&pg;=PA45)

“We all conceal
A god within us, we all deal
With heaven direct, from whose high places we derive
The inspiration by which we live.”
Est deus in nobis, et sunt commercia caeli:
Sedibus aetheriis spiritus ille venit.
Book III, lines 549–550 (tr. James Michie)
Ars Amatoria (The Art of Love)

“Up down / on summer's lake / the flying ant / finds a wall in the air”
“The real city is the whole territory within which people move every day.”
Source: Building Entopia - 1975, Chapter 1, Ecumenopolis, p. 15

2011, Tucson Memorial Address (January 2011)
Page 216
Your Job-Hunt Ltd – Advice from an Award-Winning Asian Headhunter (2003), Successful Recruitment in a Week (2012) https://books.google.ae/books?idp24GkAsgjGEC&printsecfrontcover&dqnigel+cumberland&hlen&saX&ved0ahUKEwjF75Xw0IHNAhULLcAKHazACBMQ6AEIGjAA#vonepage&qnigel%20cumberland&ffalse, Managing Teams in a Week (2013) https://books.google.ae/books?idqZjO9_ov74EC&printsecfrontcover&dqnigel+cumberland&hlen&saX&ved0ahUKEwjF75Xw0IHNAhULLcAKHazACBMQ6AEIIDAB#vonepage&qnigel%20cumberland&ffalse, Secrets of Success at Work – 50 techniques to excel (2014) https://books.google.ae/books?id4S7vAgAAQBAJ&printsecfrontcover&dqnigel+cumberland&hlen&saX&ved0ahUKEwjF75Xw0IHNAhULLcAKHazACBMQ6AEIJjAC#vonepage&qnigel%20cumberland&ffalse
Context: So many people give up too easily and as a result they never achieve the level of work success that might otherwise have been possible. People might overcome any hesitation in trying out something once, but in the face of the first setback, rejection or failure the majority of people would not continue and would simply give up. It is impossible to excel in your job and career if you are part of this majority - you would be leaving the minority who would be persevering, trying again and in many cases eventually succeeding. Can you imagine how many other light bulb inventors tried, failed and gave up during the time that Thomas Edison was showing amazing resilience by trying again and again until he eventually succeeded. Not giving up in itself is a form of excelling and would enable you to stand out amongst your colleagues.

Blackouts
20s A Difficult Age (2017)