A wise man said: before you speak， let your words pass through three gates. At the first gate， ask yourself， "Is it true？" At the second gate， ask "Is it necessary？" At the third gate， ask， "Is it kind？"

永远不要放弃你的梦想，无论它们看起来多么不可能。

科学不仅仅是一门学科，它是一种思维方式。