The ratio of time involved in work to time available for work is usually about 0.6.
The repairman will never have seen a model quite like yours before.
The road to hell is paved with good intentions and littered with sloppy analysis.
The severity of the itch is inversely proportional to the reach.
The simplest subjects are the ones you don't know anything about.
The solution to a problem changes the nature of the problem.
The solving of a problem lies in finding the solvers.
The sooner you fall behind, the more time you will have to catch up!
The squeaky wheel doesn't always get the grease; sometimes it gets replaced.
The stomach expands to accommodate the amount of junk food available