This complexity of causes in psychology might be connected with Bergson's arguments against repetition in the mental world.

心理学中原因的这种复杂性可能与柏格森反对精神世界中重复的论点有关。

He lives in a mental world of his own, more aloof than any Sun-King, and he has only the narrow mental equipment and experience of an agitator to guide him.

他生活在自己的精神世界中， 比任何太阳王都更加冷漠， 他只有狭隘的精神装备和煽动者的经验来指导他。

But I should say that images belong only to the mental world, while those occurrences (if any) which do not form part of any " experience" belong only to the physical world.

但我应该说， 意象只属于精神世界， 而那些不构成任何“经验” 的事件（如果有的话）只属于物质世界。

Travelling, whether in the mental or the physical world, is a joy, and it is good to know that, in the mental world at least, there are vast countries still very imperfectly explored.

旅行，无论是在精神世界还是物质世界，都是一种乐趣，而且很高兴知道，至少在精神世界中，还有许多尚未完全探索的广阔国度。