Human brain (or wisdom) makes people successful, but also makes absolute failure.
Human brain (or intelligence) makes people to obtain the world's greatest achievement, but also makes people to obtain the world's largest failure.
Human brain (or intelligence) makes the world full of goodness, but also makes the world full of evil.
Human brain (or wisdom) is the world's largest creation, but is also the largest destruction in the world.
But no matter what, human intelligence is still limited.