Recommended translations:

• "Theages," trans. T. Pangle in The Roots of Political Philosophy, ed. Thomas L. Pangle (Cornell, 1987).
• "Theages," trans. N. Smith in Plato: Complete Works, ed. J. M. Cooper (Hackett, 1997).

Excerpt:

Demodocus
Socrates, I was wanting to have some private talk with you, if you had time to spare; even if there is some demand, which is not particularly important, on your time, do spare some, nevertheless, for me.

Socrates
Why, in any case I happen to have time to spare, and for you, moreover, I have plenty. Well, you are free to say whatever you wish.

Demodocus
Then do you mind if we step aside here from the street into the portico of Zeus the Liberator?

Socrates
As you think best.

Demodocus
Let us go, then. Socrates, it would seem that all growths follow the same course, both those that grow from the earth, and the animals, including man. In regard to the plants, as you know, we who cultivate the earth find it the easiest part of our work to make all our preparations that are needed before planting, and to do the planting itself; but when the plant begins to grow, thenceforward we have a great deal of difficult and vexatious business in tending the new growth. Such, it seems, is also the case in regard to men.

Online:
Amazon (Recommended Translation: Pangle)
Amazon (Recommended Translation: Smith)
Project Perseus (English, Free Access)
Project Perseus (Greek, Free Access)