The only limit to our realization of tomorrow will be our doubts of today.
We are forever responsible for what we have tamed.
如果使人們喜怒無常，居處不定，思慮不得要領，行事中途就亂了章法；那么，天下間就會出現(xiàn)各種不平與不合理，而后像盜拓或者曾參、史鰍做的那些事情，都會發(fā)生。
科學思想不像被分成越來越小的蛋糕，而像一棵不斷分枝的樹。
The Moving Finger writes; and, having writ, Moves on: nor all thy Piety nor Wit Shall lure it back to cancel half a Line, Nor all thy Tears wash out a Word of it.