Permitting Quotes
For if experience has ever taught a truth, it is that a plurality in the supreme Executive will forever split into discordant factions, distract the nation, annihilate its energies, and force the nation to rally under a single head, generally an usurper. We have, I think, fallen on the happiest of all modes of constituting the Executive, that of easing and aiding our President, by permitting him to choose Secretaries of State, of Finance, of War, and of the Navy, with whom he may advise, either separately or all together, and remedy their divisions by adopting or controlling their opinions at his discretion; this saves the nation from the evils of a divided will, and secures to it a steady march in the systematic course which the President may have adopted for that of his administration.
Thomas Jefferson
A geologist should be well versed in chemistry, natural philosophy, mineralogy, zoology, comparative anatomy, botany; in short, in every science relating to organic and inorganic nature. ...But the brief duration of human life, and our limited powers, are so far from permitting us to aspire to such extensive acquisitions, that excellence even in one department is within the reach of few, and those individuals most effectually promote the general progress, who concentrate their thoughts on a limited portion of the field of inquiry.
Charles Lyell