Quote #16496
You can’t put the toothpaste back in the tube.
Quote #15322
To be always intending to live a new life, but never find time to...
Quote #9576
If my theory of relativity proves to be correct, Germany will claim me a...
Quote #21449
There is plenty of courage among us for the abstract, but not for the...
Quote #20901
I have not slept one wink.
Quote #17506
The firm, the enduring, the simple, and the modest are near to virtue.
Quote #23782
Restlessness and discontent are the first necessities of progress.
Quote #26226
One’s family is the most important thing in life. I look at it this...
Quote #25798
There is only one step from the sublime to the ridiculous.
Quote #11686
I believe there is no source of deception in the investigation of nature which...