The creation of empires and civilizations, the discovery of continents, the waging of wars, the whole ebb and flow of history is a graphic portait of Man's ceaseless quest for happiness ---- No matter how well life turns out, nothing seems quite enough.

(A) Yet, most of us will acknowledge that we don't always feel happy.

(B) We are weighed down by a sense of luck.

(C) No matter what the message, mankind is united in the conviction that happiness is a very desirable state.