Vanessa was involved at the moment not in philosophical speculations, but practical realities.

His texts have ranged from philosophical speculations to word games.

The seat of awareness is a subject of philosophical speculation.

What I saw took all philosophical speculation out of me in short order.

But this was no time to be carrying philosophical speculation far into the future.

Even these religious works contain scientific and philosophical speculation.

It has been the subject of much philosophical, scientific, and theological speculation throughout history.

Despite our attempts to understand nature, a complete understanding of reality remains open to philosophical speculation.

I guess it would be easy to undermine his philosophical speculations.

Such philosophical speculations will not help in accomplishing what he must.