Let no one destitute of geometry enter my doors.

It is fear and terror that make all men brave, except the philosophers. Yet it is illogical to be brave through fear and cowardice.

Harmony sinks deep into the recesses of the soul and takes its strongest hold there, bringing grace also to the body & mind as well. Music is a moral law. It gives a soul to the universe, wings to the mind, flight to the imagination, a charm to sadness, and life to everything. It is the essence of order.

Attention to health is life greatest hindrance.

Lessons, however, that enter the soul against its will never grow roots and will never be preserved inside it.

Philosophy is the highest music.

Mankind censure injustice fearing that they may be the victims of it, and not because they shrink from committing it.