Representation of the world, like the world itself, is the work of men; they describe it from their own point of view, which they confuse with the absolute truth.

可持续性不是一种选择，而是我们对下一代的责任。

智慧在于认识自己。

I think we have gone through a period when too many children and people have been given to understand 'I have a problem, it is the Government's job to cope with it!' or 'I have a problem, I will go and get a grant to cope with it!' 'I am homeless, the Government must house me!' and so they are casting their problems on society and who is society? There is no such thing! There are individual men and women and there are families and no government can do anything except through people and people look to themselves first.

The world is full of stories, but the stories are all one.

形式化方法不是银弹，但它们是追求可靠系统的重要工具。

这些建议都不是定律。它们更像是帽子。如果其中一顶不合适的话，就试试另一顶。