迈向可持续实践的每一个小步骤都很重要;完美不是目标,进步才是。
Every small step towards sustainable practices counts; perfection is not the goal, progress is.
The best mathematicians are those who are not afraid to take risks.
The value or worth of a man is, as of all other things, his price; that is to say, so much as would be given for the use of his power.