He knew Latin, played at geology, studied the stars and wrote philosophical and musicological tracts.

Although Ibsen's play has come to stand for a philosophical tract, it is, in intent, a drama about self-worth, about a family in upheaval.

Like other students who fill the cafes near Columbia, she loved long, intense discussions on German literary criticism or analyzing impenetrable philosophical tracts.

It contains not just heroic tales of battle but also love stories and philosophical tracts.

His real work, as he saw it, was perfecting a philosophical tract that never escaped his desk drawer.

When he travels, his suitcase is often packed with philosophical tracts.

This is not going to be a long, portentous philosophical tract.

It is expressed through both philosophical tracts and metaphor that the potentiality of masculine being is given actuation by the feminine divine.

While, on the surface, it is a work of vibrant and exciting science fiction, deeper down, it functions as a philosophical tract.

He wrote poems, plays and philosophical, religious and historical tracts.