"Every journey conceals another journey within its lines: the path not taken and the forgotten angle."

A thing is not necessarily either true or false; it can be both true and false.

The power of abstraction is that it allows us to ignore details that are not relevant to the task at hand.

自然知识的改进者绝对拒绝承认权威。对他来说，怀疑主义是最高的责任；盲目信仰是不可饶恕的罪过。

物理学是简化的科学。