The scientist does not study nature because it is useful; [s]he studies it because [s]he delights in it, and [s]he delights in it because it is beautiful.

Henri Poincaré

Here are Bacchus and Ariadne,
Handsome, and burning for each other:
Because time flees and fools,
They stay together always content.
These nymphs and those others
Are ever full of joy.
Let those who wish to be happy, be:
Of tomorrow, we have no certainty.

Ovid, Metamorphosis (VIII, lines 160-182)