When a new movement in art attains a certain fashion, it is advisable to find out what its advocates are aiming at, for, however farfetched and unreasonable their principles may seem today, it is possible that in years to come they may be regarded as normal.

[参考译文]

当艺术上的一项新运动达到一定流行程度时，最好先弄清该运动倡导者的目的，因为，无论他们的创作原则在今天看来多么牵强、多么荒谬，在未来这些理论有可能会被视为正常的东西。