If, then, as we go back from the most modern and most complex substances to the most ancient and simplest substances, we see, on the average, a great increase in affinity and stability, it results that if the same law holds with the simplest substances known to us, the components of these, if they are compound, may be assumed to have united with affinities far more intense than any we have experience of, and to cling together with tenacities far exceeding the tenacities with which chemistry acquaints us.
"Essays: Scientific, Political, & Speculative, Vol. I"
Herbert Spencer
But the perception only roused in himself some slumbering tenacities and vehemences of which he had been scarcely aware.
"Marriage àla mode"
Mrs. Humphry Ward