Protection is not a principle but an expedient
Great men should think of opportunity and not of time. That is the excuse of feeble and puzzled spirits.
Finality is not the language of politics.
Beauty can inspire miracles.
The world is devoted to physical science, because it believes theses discoveries will increase its capacity of luxury and self-indulgence. But the pursuit of science only leads to the insoluble.
The best way to become acquainted with a subject is to write about it.