A sympathetic Scot summed it all up very neatly in the remark, "You should make a point of trying every experience once, excepting incest and folk dancing."
The radical of one century is the conservative of the next. The radical invents the views. When he has worn them out the conservative adopts them.
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' (I found it!) but 'That's funny ...'
Creative work is play. It is free speculation using materials of one's chosen form.
The Americans have need of the telephone, but we do not. We have plenty of messenger boys.
There are sadistic scientists who hurry to hunt down errors instead of establishing the truth.
Good judgment comes from experience, and experience comes from bad judgment.