He knew what was right, and, at all costs, he would pursue it.

That was certain.

But alas! in this our life what are the certainties?
"In nothing be over-zealous!" says an old Greek.

"The due measure in all the works of man is best.

For often one who zealously pushes towards some excellence, though he be pursuing a gain, is really being led utterly astray by the will of some Power, which makes those things that are evil seem to him good, and those things seem to him evil that are for his advantage." Surely, both the Prince and the Baron might have learnt something from the frigid wisdom of Theognis.
Victoria noticed that her husband sometimes seemed to be depressed and overworked.