We are a small firm working for non-profit issues and campaigns. We
are writing a pamphlet and need some quotations/proverbs/sayings that
would apply to what we are trying to convey.
For example: Necessity: Necessity is the mother of invention"---Then
for our purposes "but in this case the impetus of creativity"

The words and their usage are:

Rapport: As in "the sense of connection, bond or understanding between two people.

I have gathered some quotes for you, and have created one of my own.

"Rapport is the quality of harmony, recognition and mutual acceptance
that exists between people when they are at ease with one another and
where communication is occurring easily."

Pegasus NLP Trainings
http://www.nlp-now.co.uk/rapport.htm

"Rapport is the ability to enter someone else's world, to make him
feel that you understand him, that you have a strong common bond. It's
the ability to go fully from your map of the world to his map of the
world. It's the essence of successful communication."
 Author: Anthony Robbins 

Personal Success Magazine: Rapport
http://www.devco.demon.co.uk/rapport1.html

"Thinking like people is vital for establishing rapport. Rapport is
that sense of commonality and compatibility that precedes trust...
Rapport is the magic to make all your interpersonalcommunications
work."
 Author: Scott Arbuthnot

Retailer News: The Magic of Rapport
http://www.retailernews.com/899/arbuthnot899.html

"Rapport is not a state; it is a process of continually building the
sense of trust with the other person."

Merrill Associates: Sharpening Your Interviewing Skills
http://www.merrillassociates.net/topic/2000/10

My own creation:

"Just as a port serves to bring ships toward the safety of shore,
rapport serves to guide humans toward the formation of stable
relationships."

I hope this is helpful!

Best regards,
pinkfreud

Great!

Many thanks for the generous tip.

~pinkfreud