"当老师们自己被教导学习时，知识的世界发生了疯狂的转变"

“We have in fact two kinds of morality side by side: one which we preach but do not practic...”

“The demand for certainty is one which is natural to man, but is nevertheless an intellectual vice.”

“Not to be absolutely certain is, I think, one of the essential things in rationality”

“The universe may have a purpose, but nothing we know suggests that, if so, this purpose ha...”

“Words have a magical power. They can bring either the greatest happiness or deepest despair.”

“We don't stop playing because we grow old; we grow old because we stop playing.”

“People cry not because they’re weak, it’s because they’ve been strong for too long.”

“Turn your wounds into wisdom”

“We all have two lives. The second one starts when we realize we only have one”

“Fear is just another word for ignorance”

“You know what the happiest animal on Earth is? It's a goldfish. You know why? It's got a 1...”

“Your ability to communicate is an important tool in your pursuit of your goals, whether it...”

“When everything seems to be going against you, remember that the airplane takes off agains...”

“The greater the difficulty, the greater the glory”

“Believe you can and you're halfway there.”

“I think frugality drives innovation, just like other constraints do. One of the only ways ...”