If the empire had been afflicted by any recent calamity, by a plague, a famine, or an unsuccessful war; if the Tiber had, or if the Nile had not, ris… - Edward Gibbon

It is difficult to paint the light, the various, the inconstant character of Gallienus, which he displayed without constraint, as soon as he became sole possessor of the empire. In every art that he attempted, his lively genius enabled him to succeed; and as his genius was destitute of judgment, he attempted every art, except the important ones of war and government. He was a master of several curious, but useless sciences, a ready orator, an elegant poet, a skilful gardener, an excellent cook, and most contemptible prince... There were, however, a few short moments in the life of Gallienus, when, exasperated by some recent injury, he suddenly appeared the intrepid soldier and the cruel tyrant; till, satiated with blood, or fatigued by resistance, he insensibly sunk into the natural mildness and indolence of his character.

Trajan was ambitious of fame; and as long as mankind shall continue to bestow more liberal applause on their destroyers than on their benefactors, the thirst of military glory will ever be the vice of the most exalted characters.

The principles of a free constitution are irrecoverably lost, when the legislative power is nominated by the executive.