Ayn Rand -

The three rules listed below are by no means exhaustive; they are merely the first leads to the understanding of a vast subject.

1. In any conflict between two men (or two groups) who hold the same basic principles, it is the more consistent one who wins.
2. In any collaboration between two men (or two groups) who hold different basic principles, it is the more evil or irrational one who wins.
3. When opposite basic principles are clearly and openly defined, it works to the advantage of the rational side; when they are not clearly defined, but are hidden or evaded, it works to the advantage of the irrational side.