“… who shall measure the heat and violence of a poet's heart when caught and tangled in a woman's body?”

p, 125
Reflections on the Motive Power of Heat (1824)

Variant: nobody hαs ever meαsured, not even poets, how much the heαrt cαn hold.

Source: The Myth of Male Power (1993), Part III: Government as substitute husband, p. 255.

The Inferno (1917), Ch. XIV
Context: I thought of all those wise men, poets, artists before me who had suffered, wept, and smiled on the road to truth. I thought of the Latin poet who wished to reassure and console men by showing them truth as unveiled as a statue. A fragment of his prelude came to my mind, learned long ago, then dismissed and lost like almost everything that I had taken the pains to learn up till then. He said he kept watch in the serene nights to find the words, the poem in which to convey to men the ideas that would deliver them. For two thousand years men have always had to be reassured and consoled. For two thousand years I have had to be delivered. Nothing has changed the surface of things. The teachings of Christ have not changed the surface of things, and would not even if men had not ruined His teachings so that they can no longer follow them honestly. Will the great poet come who shall settle the boundaries of belief and render it eternal, the poet who will be, not a fool, not an ignorant orator, but a wise man, the great inexorable poet? I do not know, although the lofty words of the man who died in the boarding-house have given me a vague hope of his coming and the right to adore him already.

Speech before Congress (April 4, 1917), Congressional Record—Senate, April 4, 1917, 224–225.
Context: Mr. President, I had supposed until recently that it was the duty of senators and representatives in Congress to vote and act according to their convictions on all public matters that came before them for consideration and decision. Quite another doctrine has recently been promulgated by certain newspapers, which unfortunately seems to have found considerable support elsewhere, and that is the doctrine of “standing back of the President” without inquiring whether the President is right or wrong.
For myself, I have never subscribed to that doctrine and never shall. I shall support the President in the measures he proposes when I believe them to be right. I shall oppose measures proposed by the President when I believe them to be wrong.

A Hundred and Seventy Chinese Poems (1919), Introduction, p. 18

Sia maladetto chi si fidò mai,
O vuol fidarsi di donna che sia;
Che false sono e maladette tutte;
E più anche le belle che le brutte.
XXII, 49
Rifacimento of Orlando Innamorato

Four Minute Essays Vol. 5 (1919), The Human Heart

Bk. I, ch. 7
The Return of the Native (1878)