A man in this world without learning is as a beast of the field.

When an elephant is in trouble even a frog will kick him.

The Three great mysteries: air to a bird, water to a fish, mankind to himself.

There is nothing noble in being superior to some other man. The true nobility is in being superior to your previous self.

It takes a thorn to remove a thorn.

Help thy brother's boat across, and lo! thine own has reached the shore.