1. When a distinguished but elderly scientist states that something is possible, he is almost certainly right. When he states that something is impossible, he is very probably wrong.
   2. The only way of discovering the limits of the possible is to venture a little way past them into the impossible.
   3. Any sufficiently advanced technology is indistinguishable from magic.

The Peter principle is a concept in management developed by Laurence J. Peter, which observes that people in a hierarchy tend to rise to their "level of incompetence". In other words, an employee is promoted based on their success in previous jobs until they reach a level at which they are no longer competent, as skills in one job do not necessarily translate to another.

Work expands so as to fill the time available for its completion.

When a measure becomes a target, it ceases to be a good measure.