Thomas Jefferson to James Madison, Dec. 20, 1787

Excerpts;

...The season admitting only of operations in the Cabinet, and these being in a great measure secret, I have little to fill a letter. I will therefore make up the deficiency by adding a few words on the Constitution proposed by our Convention. I like much the general idea of framing a government which should go on of itself peaceably, without needing continual recurrence to the state legislatures. I like the organization of the government into Legislative, Judiciary & Executive. I like the power given the Legislature to levy taxes, and for that reason solely approve of the greater house being chosen by the people directly. For tho' I think a house chosen by them will be very illy qualified to legislate for the Union, for foreign nations &c. yet this evil does not weigh against the good of preserving inviolate the fundamental principle that the people are not to be taxed but by representatives chosen immediately by themselves. I am captivated by the compromise of the opposite claims of the great & little states, of the latter to equal, and the former to proportional influence. I am much pleased too with the substitution of the method of voting by persons, instead of that of voting by states: and I like the negative given to the Executive with a third of either house, though I should have liked it better had the Judiciary been associated for that purpose, or invested with a similar and separate power. There are other good things of less moment. I will now add what I do not like. First the omission of a bill of rights providing clearly & without the aid of sophisms for freedom of religion, freedom of the press, protection against standing armies . . . Let me add that a bill of rights is what the people are entitled to against every government on earth, general or particular, & what no just government should refuse, or rest on inferences...."

Full article here.