“A change of work is the best rest.”

“Anything is better than stagnation.”

“It is only when you touch the higher that you realize how low we may be among the possibilities of creation.”

“Do you remember what Darwin says about music? He claims that the power of producing and appreciating it existed among the human race long before the power of speech was arrived at. Perhaps that is ...”

“How sweet the morning air is! See how that one little cloud floats like a pink feather from some gigantic flamingo. Now the red rim of the sun pushes itself over the London cloud-bank. It shines on...”

“How small we feel with our petty ambitions and strivings in the presence of the great elemental forces of Nature!”

“He was, however, unable to give much prolonged or continuous thought to anything that evening , or to concentrate on any one idea; and anyway, even if he had been able to, he would not have found h...”

“Nature can counsel nothing but crime.”

“A criminal remains a criminal whether he uses a convict's suit or a monarch's crown.”

“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.”