If you take advantage of everyone’s wisdom, you can do anything; if you use everyone’s strength, you can win everything.
From Liu An's "Huainanzi·Zhushu Xun":
Translation: If you use the wisdom of everyone, there will be nothing you can't do; if you use the strength of everyone, there will be nothing you can't defeat. It means relying on the wisdom and strength of the masses to be invincible.
When people unite, Mount Tai will move. It’s hard to walk with one foot, and it’s hard to sing with one hand.
From the anonymous "Ancient and Modern Virtue".
Translation: If people work together, even Mount Tai can move; one foot cannot walk, one hand cannot clap. It is a metaphor that it is not enough for one person to do things, it must rely on the strength of everyone.