To deceive oneself is very easy. [ English Proverb, collected by George Herbert ]

The only possible society is oneself. [ Oscar Wilde, An Ideal Husband ]

To love oneself is the beginning of a lifelong romance. [ Oscar Wilde, An Ideal Husband ]

Duty is what one expects from others - it is not what one does oneself. [ Oscar Wilde, A Woman of No Importance ]

Fashion is what one wears oneself. What is unfashionable is what other people wear. [ Oscar Wilde, An Ideal Husband ]

The only thing to do with good advice is to pass it on. It is never of any use to oneself. [ Oscar Wilde, An Ideal Husband ]

Cure oneself as far as possible of a trick common to almost every one, of using four or five adjectives before a noun. [ Ada Ellen Bayly, a.k.a. Edna Lyall, English novelist and early feminist, The Art Of Authorship, 1891 ]

When one is in love one begins by deceiving oneself, one ends by deceiving others. That is what the world calls romance. [ Oscar Wilde, The Picture of Dorian Grey ]

Self-sacrifice is a thing that should be put down by law. It is so demoralizing to the people for whom one sacrifices oneself. [ Oscar Wilde, An Ideal Husband ]