No crime is vulgar, but all vulgarity is crime.  Vulgarity is the conduct of others.
Only the shallow know themselves.
Time is a waste of money.
One should always be a little improbable.
There is a fatality about all good resolutions.  They are invariably made too soon.
The only way to atone for being occasionally a little over-dressed is by being always absolutely over-educated.
To be premature is to be perfect.
Any preoccupation with ideas of what is right and wrong in conduct shows an arrested intellectual development.
Ambition is the last refuge of the failure.
A truth ceases to be true when more than one person believes in it.
In examinations the foolish ask questions that the wise cannot answer.
Greek dress was in its essence inartistic.  Nothing should reveal the body but the body.
One should either be a work of art, or wear a work of art.
It is only the superficial qualities that last.  Man's deeper nature is soon found out.
Industry is the root of all ugliness.
The ages live in history through their anachronisms.
Being a  Belle Époque   dandy , Wilde took great pride in his fashion sense; even  creating lectures based around it . In fact, his over-flowery clothes and refined manners is why he is often misconceptioned  as an aristocrat . His clothing is still relevant today – notably  the green carnations he wore as art  now being a symbol of gay pride. 

Phrases and Philosophies For the Use of the Young