A television picture or a movie might be lost forever, but your book is waiting.
Dogma is invariably wrong, as knowledge is always in a state of transition.
A man who says he has never been scared is either lying or else he's never been any place or done anything.
It is better to have no emotion when it is work. Do what needs to be done, and do it coolly.
What is today accepted as truth will tomorrow prove to be only amusing.
A book is less important for what it says than for what it makes you think.