心理学的方法必须像自然科学的方法一样精确。

人心比山川更险恶，比了解天象更困难。

人生は、一度きりの旅だ。だからこそ、その瞬間を大切にしなければならない。

You have to be able to adapt to changing market conditions. If you can't adapt, you won't survive.

The person who tries to live alone will not succeed as a human being. His heart withers if it does not answer another heart. His mind shrinks away if he hears only the echoes of his own thoughts and finds no other inspiration.

Silence is the loudest sound of all.