Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.

处理一个不自由的世界的唯一方法是变得如此绝对自由，以至于你的存在本身就是一种反叛。

No arts; no letters; no society; and which is worst of all, continual fear, and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.

Everything you want is on the other side of fear.

The meaning of earthly existence lies not, as we have grown used to thinking, in prospering but in the development of the soul.

人は、自分が信じたいものを信じる。