Not from the above book, but a few others will suffice. For clarity I took the liberty of coloring Lincoln's comments red.
When asked, as President of the United States, "why not let the South go?" his simple, direct, and honest answer revealed one secret of the wise policy of the Washington Cabinet. "Let the South go!" said he, "where, then, shall we get our revenue?"And these:
Albert Taylor Bledsoe, Is Davis a traitor; or, Was secession a constitutional right previous to the war of 1861?, Baltimore: Innes & Company, 1866, pp. 143-144.
Another effort was made to move Abraham Lincoln to peace. On the 22nd, a deputation of six members from each of the five Christian Associations of Young Men in Baltimore, headed by Dr. Fuller, and eloquent clergyman of the Baptist church, went to Washington and had an interview with the President. He received them with a sort of rude formality. Dr. Fuller said, that Maryland had first moved in adopting the constitution, and yet the first blood in this war was shed on her soil; he then interceded for a peaceful separation, entreated that no more troops should pass through Baltimore, impressed upun Mr. Lincoln the terrible responsibility resting on him - that on him depended peace or war - a fratricidal conflict or a happy settlement.And another similar account of the preceding:"But," said Lincoln, "what am I to do?"
"Let the country know that you are disposed to recognize the Southern Confederacy," answered Dr. Fuller, "and peace will instantly take the place of anxiety and suspense and war may be averted."
"And what is to become of the revenue?" rejoined Lincoln, "I shall have no government, no resources!" [italics in original]
Robert Reid Howison, "History of the War", excerpted in Southern Literary Messenger, Vol. 34, Issue 8, August 1862, Richmond, VA., pp. 420-421.
"But," said Mr. Lincoln, "what am I to do?"The meeting was written up in the Baltimore Sun 23 Apr 1861 edition."Why, sir, let the country know that you are disposed to recognize the independance of the Southern States. I say nothing of secession; recognize the fact that they have formed a government of their own; that they will never be united again with the North, and and peace will instantly take the place of anxiety and suspense, and war may be averted."
"And what is to become of the revenue?" was the reply. "I shall have no government - no revenues."
Evert A. Duyckinck, National history of the war for the union, civil, military and naval. Founded on official and other authentic documents, New York: Johnson Fry & Co., 1861.
This story appears to be apocryphal.
But you forgot this:
"South Carolina...cannot get out of this Union until she conquers this government. The revenues must and will be collected at her ports, and any resistance on her part will lead to war. At the close of that war we can tell with certainty whether she is in or out of the Union. While this government endures there can be no disunion...
If the overt act on the part of South Carolina takes place on or after the 4th of March, 1861, then the duty of executing the laws will devolve upon Mr. Lincoln. The laws of the United States must be executed-- the President has no discretionary power on the subject -- his duty is emphatically pronounced in the Constitution. Mr. Lincoln will perform that duty. Disunion by armed force is treason, and treason must and will be put down at all hazards. The Union is not, and cannot be dissolved until this government is overthrown by the traitors who have raised the disunion flag. Can they overthrow it? We think not.
Illinois State Journal, November 14, 1860
Tariffs were a piddling amount -- less than $2 per year per person in the USA. And 95% of -that- amount was collected in northern ports. Two customs houses in the south LOST money -- it cost more to operate them than they collected.
But the collection of tariffs -was- a sign of federal power, and one that President Lincoln was not willing to relinquish.
Walt