Medicine to produce health must examine disease and music, to create harmony must investigate discord.

Painting is silent poetry, and poetry is painting that speaks.

To make no mistakes is not in the power of man but from their errors and mistakes the wise and good learn wisdom for the future.

I would rather excel in the knowledge of what is excellent, than in the extent of my power and possessions.

To make no mistakes is not in the power of man but from their errors and mistakes the wise and good learn wisdom for the future.