The most dangerous untruths are truths slightly distorted.
Georg C. Lichtenberg
There is no greater impediment to progress in the sciences than the desire to see it take place too quickly.
When an acquaintance goes by I often step back from my window, not so much to spare him the effort of acknowledging me as to spare myself the embarrassment of seeing that he has not done so.
We cannot remember too often that when we observe nature, and especially the ordering of nature, it is always ourselves alone we are observing.
To grow wiser means to learn to know better and better the faults to which this instrument with which we feel and judge can be subject.
What is the good of drawing conclusions from experience? I don't deny we sometimes draw the right conclusions, but don't we just as often draw the wrong ones?