For when plays are ordered with a view to children having the same plays, and amusing themselves after the same manner, and finding delight in the same playthings, the more solemn institutions of the state are allowed to remain undisturbed.

Whereas if sports are disturbed, and innovations are made in them, and they constantly change, and the young never speak of their having the same likings, or the same established notions of good and bad taste, either in the bearing of their bodies or in their dress, but he who devises something new and out of the way in figures and colours and the like is held in special honour, we may truly say that no greater evil can happen in a state; for he who changes the sports is secretly changing the manners of the young, and making the old to be dishonoured among them and the new to be honoured.

And I affirm that there is nothing which is a greater injury to all states than saying or thinking thus.

Will you hear me tell how great I deem the evil to be?
CLEINIAS: You mean the evil of blaming antiquity in states?
ATHENIAN: Exactly.
CLEINIAS: If you are speaking of that, you will find in us hearers who are disposed to receive what you say not unfavourably but most favourably.
ATHENIAN: I should expect so.
CLEINIAS: Proceed.
ATHENIAN: Well, then, let us give all the greater heed to one another's words.

The argument affirms that any change whatever except from evil is the most dangerous of all things; this is true in the case of the seasons and of the winds, in the management of our bodies and the habits of our minds--true of all things except, as I said before, of the bad.
He who looks at the constitution of individuals accustomed to eat any sort of meat, or drink any drink, or to do any work which they can get, may see that they are at first disordered by them, but afterwards, as time goes on, their bodies grow adapted to them, and they learn to know and like variety, and have good health and enjoyment of life; and if ever afterwards they are confined again to a superior diet, at first they are troubled with disorders, and with difficulty become habituated to their new food.