This oak tree and me, we're made of the same stuff.
There are as many atoms in one molecule of DNA as there are stars in a typical galaxy.
When Kepler found his long-cherished belief did not agree with the most precise observation, he accepted the uncomfortable fact. He preferred the hard truth to his dearest illusions, that is the heart of science.
What an astonishing thing a book is.
Where we have strong emotions, we're liable to fool ourselves.
One glance at a book and you hear the voice of another person, perhaps someone dead for 1,000 years. To read is to voyage through time.