Quote #18371
Doubt is the vestibule through which all must pass before they can enter into...
Quote #16216
The true aim of everyone who aspires to be a teacher should be, not...
Quote #24109
One does not adopt a new idea, one slips into it.
Quote #9810
Do you want to know the secret of pain? If you just stop feeling...
Quote #6980
We do not destroy religion by destroying superstition.
Quote #27696
We must dare to think unthinkable thoughts. We must learn to explore all the...
Quote #21576
Hope is only the love of life.
Quote #27173
Our observation of nature must be diligent, our reflection profound, and our experiments exact....
Quote #30566
Luck is when preparation meets opportunity.
Quote #10620
There is no old age. There is, as there always was, just you.