your better nature

(one's) better nature

The best aspects of one's character, especially one's generosity, magnanimity, mercy, or empathy. I wouldn't bother trying to appeal to his better nature—the boss doesn't look on requests for charity lightly. With this fundraiser, we're hoping people's better nature shines through to help the millions in need following the natural disaster.
See also: better, nature
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

your better nature

the good side of your character; your capacity for tolerance, generosity, or sympathy.
1995 Daily Mail Pollard is thrown out of the Woolpack and tries to weasel his way back in by appealing to Caroline's better nature.
See also: better, nature
Farlex Partner Idioms Dictionary © Farlex 2017
See also:
References in classic literature ?
"Richard!" he said, "since we first met, I have believed in your better nature, against all outward appearance.
Only occasionally rising to the bait of the constant teasing and harassment directed at her, primarily from popular classmate Gretchen, Olive stands her ground, exhorting Reyna to "follow your better nature." As they work on school projects together, Reyna comes to know Olive better, from her alcoholic mother to her runaway friend Grace hiding out in the Barton's tool shed, but when Olive shares more information than Reyna is comfortable with, Reyna abruptly ends their friendship.
I would appeal to your better nature to come forward.
But I would like to appeal to your better nature, to unlock the floodgates of your compassion, to melt the steel of your natural reserve and beg you this morning to consider the perilous plight of some much-loved old friends who are currently the subject of vicious and unjustified persecution that is threatening their very existence.
All that matters for the time being is that your better nature has prevailed.
So come on politicians, we appeal to your better natures today.