The value of a thought is in its consequences for behavior.
一个思想的价值在于它对行为的后果。
在怀疑时,克制自己。
试图在不激发学生学习欲望的情况下进行教学的老师,就像在冷铁上敲打。
The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends, and where the other begins?
Innovation comes from challenging the status quo and being willing to take risks.