The philosophical belief (originally from Mencius) that human nature is fundamentally good.
孟子は性善説を説いたとされ、多くの議論を呼んだ。
Mencius is said to have advocated the doctrine that human nature is fundamentally good, which sparked much debate.
彼は人は本来良いと考える性善説の立場を取っている。
He takes the position of believing people are originally good (the doctrine of innate goodness).
哲学の授業で性善説と性悪説を比較した。
In the philosophy class we compared the views of innate goodness and innate badness of human nature.