Butterflies are not insects,' Captain John Sterling said soberly. 'They are self-propelled flowers.

In a dilemma, it is helpful to change any variable, then reexamine the problem.

War is not violence and killing, pure and simple; war is controlled violence, for a purpose. The purpose of war is to support your government's decisions by force. The purpose is never to kill the enemy just to be killing him but to make him do what you want him to do. Not killing... but controlled and purposeful violence.

A prude is a person who thinks that his own rules of propriety are natural laws.

The Earth is just too small and fragile a basket for the human race to keep all its eggs in.

There were many, many times thereafter that Don regretted having enlisted - but so has every man who ever volunteered for military service.

Luck is a tag given by the mediocre to account for the accomplishments of genius.