“Circumstances should never alter principles!”

“I am always late on principle, my principle being that punctuality is the thief of time.”

“Romance should never begin with sentiment. It should begin with science and end with a settlement.”

“One should always be in love. That's the reason one should never marry.”

“Now art should never try to be popular. The public should try to make itself artistic.”

“I like persons better than principles, and I like persons with no principles better than anything else in the world.”

“One should absorb the colour of life, but one should never remember its details. Details are always vulgar.”