As they were waiting for repair supplies at the house they were to work on, they noticed that a fence belonging to one of the neighbors was damaged, and they offered to fix it.
یکی از تحقیقات علمی نشان می‌دهد که « کمک به دیگران خصوصیتی ذاتی در وجود همهٔ انسان‌هاست .‏ .‏ .‏ .‏