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

That which is apprehended by intelligence and reason is always in the same state; but that which is conceived by opinion with the help of sensation and without reason, is always in a process of becoming and perishing and never really is.

...that not life, but a good life, is to be chiefly valued.

The love of the gods belongs to anyone who has given to true virtue and nourished it, and if any human being could become immortal, it would be he.

The well-nurtured youth is one who would see most clearly whatever was amiss in ill-made works of man or ill-grown works of nature, and with a just distaste would blame and hate the ugly even from his earliest years and would give delighted praise to beauty, receiving it into his soul and being nourished by it, so that he became a man of gentle heart.

No attempt of curing the body should be made without curing the soul

Neither do the ignorant love wisdom or desire to become wise; for this is the grievous thing about ignorance, that those who are neither good nor beautiful think they are good enough, and do not desire that which they do not think they are lacking.