Poetry is the spontaneous overflow of powerful feelings: it takes its origin from emotion recollected in tranquility.
After four years at the United Nations I sometimes yearn for the peace and tranquility of a political convention.
Humor is emotional chaos remembered in tranquility.
It is neither wealth nor splendor but tranquility and occupation which give you happiness.
It was used for decades to describe talented computer enthusiasts people whose skill at using computers to solve technical problems and puzzles was - and is - respected and admired by others possessing similar technical skills.