And even should the cloud of barbarism and despotism again obscure the science and libraries of Europe, this country remains to preserve and restore light and liberty to them.

Difference of opinion leads to enquiry, and enquiry to truth; and I am sure...we both value too much the freedom of opinion sanctioned by our Constitution, not to cherish its exercise even where in opposition to ourselves.

Leave all the afternoon for exercise and recreation, which are as necessary as reading. I will rather say more necessary because health is worth more than learning.

for the present we may groupe the sciences into Professorships as follows, subject however to be changed according to the qualifications of the persons we may be able to engage.

I have learned to be less confident in the conclusions of human reason, and give more credit to the honesty of contrary opinions.

The Constitution on which our Union rests, shall be administered by me [as President] according to the safe and honest meaning contemplated by the plain understanding of the people of the United States at the time of its adoption - a meaning to be found in the explanations of those who advocated, not those who opposed it, and who opposed it merely lest the construction should be applied which they denounced as possible.

Whensoever the General Government assumes undelegated powers, its acts are unauthoritative, void, and of no force.