Human nature is sometimes the general derogatory term for any mistake, form of ignorance, or stupidity. The expression 'To err is human' is a case in point. The descriptor is largely rhetorical, because even humanity couldn't survive actually being as idiotic as it appears to consider itself. A less routinely insulting form of reference to 'human nature' is based on characteristics like curiosity, social instincts, and other behavioral norms. The phrase 'Ecce homo', meaning 'Such is man', is often used as an illustrator of human nature in classical literature.
Examples of Human Nature:
Nobody's all bad.|
It's human nature to avoid responsibility.
Greed is one of the less appealing forms of human nature.