It seems to be by no means an insoluble question, and we may hope that science will be able to produce sufficient grounds for regarding one answer as much more probable than the other.

Women often become the embodiment of both the interesting and the insoluble questions in these areas.

There was no answer, except the general answer life gives to all the most complex and insoluble questions.

He wrestles with seemingly insoluble questions - from the personal to the political to the existential.

Nicole Kidman's ubiquitous and strangely frozen forehead kicks off the discussion with the insoluble question: What the heck did Nicole Kidman do to her face?

Even if one agrees with Aristotle that true equality consists in treating unequals unequally, this merely raises the apparently insoluble question of how it can be practically achieved.

That is all very well, my friends," said the president, "but the insoluble question still remains.

It was the simple but absolutely insoluble question: Where do microbes come from?

That is the insoluble question.

For my own part, too many thoughts crowded my brain, too many insoluble questions pressed upon me, too many fancies kept my eyes half open.