According to classes.

Dull, conceited hashes,
Confuse their brains in college classes;
They gang in stirks, and come oot asses,
Plain truth to speak. [ Burns ]

All great men come out of the middle classes. [ Emerson ]

Society is divided into two classes: the fleecers and the fleeced. [ Talleyrand ]

Being educated puts one almost on a level with the commercial classes. [ Oscar Wilde, An Ideal Husband ]

The ignorant classes are the dangerous classes. Ignorance is the womb of monsters. [ Henry Ward Beecher ]

There are but three classes of men: the retrograde, the stationary, the progressive. [ Lavater ]

The world is divided into two classes, those who believe the incredible, and those who do the improbable. [ Oscar Wilde, A Woman of No Importance ]

The history of literature abounds with examples of words used almost without meaning by whole classes of writers. [ William Mathews ]

Society is composed of two great classes: those who have more dinners than appetite, and those who have more appetite than dinners. [ Chamfort ]

We pass by common objects or persons without noticing them; but the keen eye detects and notes types everywhere and among all classes. [ Thackeray ]

A really grand passion is comparatively rare nowadays. It is the privilege of people who have nothing to do. That is the only use of the idle classes in the country. [ Oscar Wilde, A Woman of No Importance ]

Over no nation does the press hold a more absolute control than over the people of America, for the universal education of the poorest classes makes every individual a reader. [ Washington Irving ]

Many classes are always praising the by-gone time, for it is natural that the old should extol the days of their youth; the weak, the era of their strength; the sick, the season of their vigor; and the disappointed, the springtime of their hopes! [ C. Bingham ]

It seems as if all classes and conditions in life might learn to get more happiness out of their work. To accomplish this, more sentiment and less worry must be put into our efforts, which must also be viewed in their larger relations and possibilities. [ Henry D. Chapin ]

There are three classes of readers; some enjoy without judgment; others judge without enjoyment; and some there are who judge while they enjoy, and enjoy while they judge. The latter class reproduces the work of art on which it is engaged. Its numbers are very small. [ Goethe ]

Those who worship gold in a world so corrupt as this we live in have at least one thing to plead in defense of their idolatry - the power of their idol. It is true that, like other idols, it can neither move, see, hear, feel, nor understand; but, unlike other idols, it has often communicated all these powers to those who had them not, and annihilated them in those who had. This idol can boast of two peculiarities; it is worshipped in all climates, without a single temple, and by all classes, without a single hypocrite. [ Colton ]