Selection may be the unifying principles of perceptual learning at all levels.

Another unifying principle is said to be the concept of trust.

At the beginning of the 20th century, the unifying principles were thrown into question.

These short cuts can be identified and measured, which means that they act as a unifying principle for small worlds in general.

Since 1970 it has been the unifying principle in geology.

That was one of the unifying principles of the student body.

Modern thought is abstract: it looks for unifying principles behind diversity.

Mythopoeic thought doesn't look for unifying principles behind the diversity of individual events.

Successful gardens are almost always based on a unifying principle or principles.

Religion is the unifying principle, and nations associate under its banner.