Variety.

Many are good and wise; yet all for one only reckon,
For 'tis conception, alas, rules them, and not a fond heart.
Sad is the sway of conception, from thousandfold varying figures,
Needy and empty but one it is e'er able to bring.
But where creative beauty is ruling, there life and enjoyment
Dwell; to the ne'er-changing One, thousands of new forms she gives.