Usage patterns
〈人〉の人間性を疑うto doubt someone's humanity/character
People doubted his humanity because of his cruel actions.
人間性が豊かだto have a rich, generous nature
She has a rich humanity and treats everyone kindly.
人間性を失うto lose one's humanity
War can cause people to lose their humanity.
人間性を養うto cultivate one's character/humanity
Reading helps cultivate one's humanity.
人間性にあふれるto be overflowing with humanity/warmth
His speech was overflowing with humanity and moved everyone.