Pleasure is pure, pain is always tempered

When we suffer, we gain the pleasure of hoping for the end of our suffering; and we are never wrong, for we have at least the resource of sleep, in which good dreams console and soothe us; and when we are happy, the thought that our happiness will be followed by misery never comes to trouble us. Pleasure, then, when it is present, is always pure; pain is always tempered.

Giacomo Casanova - History of my life (2, 1)

Teach your child this

Teach the boy this:

what he may justly wish for; that money is hard to earn and should be used properly; the extent of our duty to our country and to our dear ones; what God orders you to be, and what place He assigned to you in the scheme of things; what we are and what we shall win when we have overcome; [Persius, Satires, III, 69-73]

teach him what knowing and not knowing means (which ought to be the aim of study); what valour is, and justice and temperance; what difference there is between ordonate and inordinate aspirations; slavery and due subordonation; licence and liberty; what are the signs of true and solid happiness; how far we should fear death, pain and shame;

How we can flee from hardships and how we can endure them [Virgil, Aeneas, III, 459]

what principles govern our emotions and the physiology of so many and diverse stirrings within us. For it seems to me that the first lessons with which we should irrigate his mind should be those which teach him to know himself, and to know how to die... and to live.

Michel de Montaigne - Complete Essays (I, 26)