Plato

Socrates: This man, on one hand, believes that he knows something, while not knowing [anything]. On the other hand, I _ equally ignorant _ do not believe [that I know anything].

....I am inclined to think that these muscles and bones of mine would have gone off long ago to Megara or Boeotia__y the dog they would, if they had been moved only by their own idea of what was best.(tr Jowett)

Piety, then, is that which is dear to the gods, and impiety is that which is not dear to them.

O dear Pan and all the other gods of this place, grant that I may be beautiful inside. Let all my external possessions be in friendly harmony with what is within. May I consider the wise man rich. As for gold, let me have as much as a moderate man could bear and carry with him.

Knowledge becomes evil if the aim be not virtuous.

...when he looks at Beauty in the only way that Beauty can be seen - only then will it become possible for him to give birth not to images of virtue (because he's in touch with no images), but to true virtue [arete] (because he is in touch with true Beauty). 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.

Ideas are the source of all things

Then the lover, who is true and no counterfeit, must of necessity be loved by his love.

let the speaker speak truly and the judge decide justly.

Only a philosopher's mind grows wings, since its memory always keeps it as close as possible to those realities by being close to which the gods are divine.

All good and evil, whether in the body or in human nature, originates in the soul, and overflows from thence, as if from the head into the eyes.

if someone got to see the Beautiful itself, absolute, pure, unmixed, not polluted by human flesh or colors or any other great nonsense of mortality, but if he could see the divine Beauty itself in its one form? Do you think it would be a poor life for a human being to look there and to behold it by that which he ought, and to be with it? Or haven't you remembered that in that life alone, when he looks at Beauty in the only way what Beauty can be seen - only then will it become possible for him to give birth no to images of virtue but to true virtue. The love of the gods belongs to anyone who has given birth to true virtue and nourished it, and if any human being could become immortal, it would be he.

For this feeling of wonder shows that you are a philosopher, since wonder is the only beginning of philosophy.

The philosopher whose dealings are with divine order himself acquires the characteristics of order and divinity.

... when someone sees a soul disturbed and unable to see something, he won't laugh mindlessly, but he'll take into consideration whether it has come from a brighter life and is dimmed through not having yet become accustomed to the dark or whether it has come from greater ignorance into greater light and is dazzled by the increased brillance.

Have you ever sensed that our soul is immortal and never dies?

Musical training is a more potent instrument than any other, because rhythm and harmony find their way into the inward places of the soul.

How could they see anything but the shadows if they were never allowed to move their heads?