De Libertate Iuvenum
O thou that art the Child of mine own Bowels, how shall I write to thee concerning Children? For herein is the Gordian Knot in our whole Rope of Wisdom, and it may not be severed by Sword, no, not of a Greater than Alexander the Two-Horned. And it is a Balance like that of the Egg, and the Violence of a Columbus will but crack the tender Shell which we must first of all preserve.
Now Sentinel to this Fortress standeth a certain Paradox of general Application, and in this large Order I will declare it, so that its particular Sense may enlighten thee hereafter. And this is the Paradox, that there are Bonds which lead to Slavery, and Bonds which lead to Freedom. All we are bound in many Fetters by Environment, and it is for ourselves in great Part to determine whether they shall enslave us or emancipate us. And I will make clear this Thesis to thee by the Way of Illustration.
 On the Freedom of Children