If you have any reason for not indulging a wish to speak to a fair woman, it is a bad plan to look long at her back: the wish to see what it screens becomes the stronger.
 George Eliot, Daniel Deronda (1876). copy citation

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Author George Eliot
Source Daniel Deronda
Topic reason women
Date 1876
Language English
Reference
Note
Weblink http://www.gutenberg.org/cache/epub/7469/pg7469-images.html

Context

“He longed to go to her and speak. Why should he not obey such an impulse, as he would have done toward any other lady in the room? Yet he hesitated some moments, observing the graceful lines of her back, but not moving. If you have any reason for not indulging a wish to speak to a fair woman, it is a bad plan to look long at her back: the wish to see what it screens becomes the stronger. There may be a very sweet smile on the other side. Deronda ended by going to the end of the small table, at right angles to Gwendolen's position, but before he could speak she had turned on him no smile, but such an appealing look of sadness, so utterly different from the chill effort of her recognition at table, that his speech was checked.” source