As it must not, so genius cannot be lawless; for it is even that constitutes its genius - the power of acting creatively under laws of its own origination.

And though thou notest from thy safe recess old friends burn dim, like lamps in noisome air love them for what they are; nor love them less, because to thee they are not what they were.

Poetry, even that of the loftiest, and seemingly, that of the wildest odes, [has] a logic of its own as severe as that of science; and more difficult, because more subtle, more complex, and dependent on more and more fugitive causes. In the truly great poets... there is a reason assignable, not only for every word, but for the position of every word.

An orphan's curse would drag to hell, a spirit from on high; but oh! more horrible than that, is a curse in a dead man's eye!

There are errors which no wise man will treat with rudeness while there is a probability that they may be the refraction of some great truth still below the horizon.

The form of truth will bear exposure, as well as that of beauty herself.

All Science is necessarily prophetic, so truly so, that the power of prophecy is the test, the infallible criterion, by which any presumed Science is ascertained to be actually & verily science. The Ptolemaic Astronomy was barely able to prognosticate a lunar eclipse; with Kepler and Newton came Science and Prophecy.