The book is full of subtle truths and oblique insights.

Brother Cadfael's "besetting sin of curiosity" compels him to discount such gossip and search for a subtler, sadder truth.

And there is no more subtle truth than that of the everyday phrase about a man having "his heart in the right place."

It is simple about the simple truth; but it is stubborn about the subtle truth.

Even this marvel he was prepared to accept, before be realized the subtler truth.

The joke stands for an ultimate truth, and that is a subtle truth.

I nodded slightly and murmured that doubtless there was much subtle truth in his view.

But as I noted before, legends of this nature must be taken allegorically, and the seeming errors analyzed for the more subtle truths they hint.

Equally important is a related but more subtle truth that will undermine public support for averting environmental catastrophe.

That is the subtle truth that often eludes so many promising life-forms.