希望不是一种感觉；它是一种可行的事情。
Making music is not to make others like it, but to make myself happy.
In mathematics, you don't understand things. You just get used to them.
每一种化合物都必须有确定的组成，这可以用其元素的符号来表示。
自由とは、自分自身に責任を持つことだ。