Who said "The noble man seeks within; the petty man seeks without."?

This quote is attributed to Mencius.

The noble man seeks within; the petty man seeks without. - Mencius

"The noble man seeks within; the petty man seeks without."

Mencius Solitude

Philosopher Chinese 372–289

"The great man is he who does not lose his child's heart."

"When you know a thing, to hold that you know it; and when you do not know a thing, to allow that you do not know it - this is knowledge."

"Benevolence is the characteristic element of humanity."

"The superior man thinks always of virtue, the common man thinks of comfort."

"Sometimes being the best means being the loneliest."

"Solitude gives us time to reflect on what matters"

"I'm not good with people, never have been."

"I feel like I'm disappearing."