“People don't know to make a leaf, but they know how to destroy one.”

“Oh, I'm not worried about him,' returned Bill. 'He's gone. It's not any more complicated than that. Honestly, if I admit it, it's me that I feel bad for.' He walked away from me and looked out towa...”

“After scientists broke open the coat of a lotus seed (Nelumbo nucifera) and coddled the embryo into growth, they kept the empty husk. When they radiocarbon-dated this discarded outer shell, they di...”

“I have accepted that I don't know all the things that I ought to know, but I do know things that I need to know.”

“My mother taught me that reading is a kind of work, and that every paragraph merits exertion, and in this way, I learned how to absorb difficult books. Soon after I went to kindergarten, however, I...”

“Love and learning are similar in that they can never be wasted.”

“I do not know what I may appear to the world, but to myself I seem to have been only like a boy playing on the sea-shore, and diverting myself in now and then finding a smoother pebble or a prettie...”

“To know the history of science is to recognize the mortality of any claim to universal truth. ”

“The scientist only imposes two things, namely truth and sincerity, imposes them upon himself and upon other scientists.”