Four ends of life

The child does what it likes best
Growing up with likes & dislikes

The youth nurtures likings into skills
And learns to convert skill to gains

The adult uses the wealth to fulfill desires
and enjoy the pleasures of world

Finally, the unending desires & fleeting enjoyments
make the old man turn within for lasting peace

Thus is dharma followed by artha, kama, moksha
Making a man realize all his purusharthas