Why Japanese?

I believe Japanese is the best language for deep thinking. Although English works well for clarifying something this language doesn't contain the rich idea from Eastern world like Buddhism.
Japanese contains not only Eastern ideas but also Western ideas. Because Japanese language has a flexibility for accepting the ideas from outside directly.
For example, we have "Katakana", the charactor system which express foreign language directly as the native speaker pronounces. It helps us to understand the idea from Western world without translating it to our language.We can understand "Major League" as it is although French people might translate it to "des ligues majeures".
That's why I primarily think in Japanese even when I have to write something in English.