Happiness according to Aristotle

Happines, he maintained, is made up of three sorts of goods: goods of the soul, which he indeed calls the foremost in importance; socondly, goods of the body: health, strenght, beauty, and the like; and thirdly, external goods: wealth, noble birth, reputation, and the like.
He held that virtue, by itself, is not sufficient to ensure happiness; bodily and external goods are also necessary, since the wise man will be wretched if he lives in pain, poverty, and the like.
Yet vice, by itself, is sufficient to ensure unhappiness, even if abundant bodily and external goods accompany it.

Diogenes Laertius - Lives of the eminent philosophers

Social networks first law

VIs:6
We strive less hard to be happy than to make people think we are happy.

La Rochefoucauld - Maxims

The happiest of men

The happiest of men is he who best knows the art of being happy without infringing on his duties; and the unhappiest is he who has adopted a profession in which he is under the sad necessity of foreseeing the future from dawn to dark of every day.

Giacomo Casanova - The history of my life (4, 3)

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)