Nothing annoys people so much as not receiving invitations.

I must decline your invitation owing to a subsequent engagement

Hear no evil, speak no evil - and you'll never be invited to a party

I am but too conscious of the fact that we are born in an age when only the dull are treated seriously, and I live in terror of not being misunderstood. Don't degrade me into the position of giving you useful information. Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.

Cecil Graham: What is a cynic?
Lord Darlington: A man who knows the price of everything, and the value of nothing.
Cecil Graham: And a sentimentalist, my dear Darlington, is a man who sees an absurd value in everything and doesn’t know the market price of any single thing.

It is a curious fact that people are never so trivial as when they take themselves seriously.