将以下文本翻译成英文，括号中的原本为法文部分需保留。

书中不难看出作者不少哲学观点在其第一本书《形而上月》（firme et clair nocturne）已有所体现。
不难看出书中不少作者的哲学观点在其第一本著作《形而上月》中已有涉及。（firme et clair nocturne）
user
It is evident that many of the author's philosophical views are reflected in their first book, "Metaphysical Moon" (firme et clair nocturne).
It is evident that many philosophical views of the author are already touched upon in their first work, "Metaphysical Moon" (firme et clair nocturne).
assistant