It is through geometry that one purifies the eye of the soul.

The punishment which the wise suffer who refuse to take part in the government, is to live under the government of worse men.

We do not learn; and what we call learning is only a process of recollection.

In heaven there is laid up a pattern which he who chooses may behold, and beholding, set his own house in order. The time has now arrived at which they must raise the eye of the soul to the Universal Light which lightens all things. With the eye ever directed toward things fixed and immutable which neither injure nor are injured - these they cannot help imitating. But I quite admit the difficulty of believing that in every man there is an eye of the soul which by the right direction is re-illumined, and is more precious far than ten thousand bodily eyes.

Even the good artisans fell into the same error as the poets; because they were good workmen they thought that they also knew all sorts of high matters, and this defect in them overshadowed their wisdom.

Music is the movement of sound to reach the soul for the education of its virtue.

Truth is the beginning of every good to the gods, and of every good to man.