没有道德或不道德的书，只有写得好或写得差的书。

避免错误的唯一方法就是没有新想法。

All mankind... being all equal and independent, no one ought to harm another in his life, health, liberty or possessions.

The most important property of a program is whether it accomplishes the intention of its user.

The principle goal of education is to create men who are capable of doing new things, not simply repeating what other generations have done.