Its principal themes include loss and the search for identity in the transition to adulthood.

One of his lost plays had, as its principal theme, an attack against a sycophant.

Endlessness, in fact, is one of the principal themes here.

The principal theme of the event was Consumerism and its impact on the natural environment.

A recapitulation of the principal theme takes the piece to its conclusion.

The principal theme of the book and play is that man has the free will to change his image.

But one of my principal themes was the burden of history.

The principal theme, or the A subject, occurs from m.1 - m.7.

His principal theme was that it was time for a change.