If you fulfill your obligations everyday you don't need to worry about the future.
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。
If knowledge can create problems, it is not through ignorance that we can solve them.
我们存在的意义不是我们自己发明的,而是被发现的。