“As Vulcans troublesome history reveals, no one gives up on a powerful, or a beautiful, or perhaps simply a familiar and useful conception of the world without utter compulsion and a real alternative.”

“If you want something new, you have to stop doing something old”

“I can't understand why people are frightened of new ideas. I'm frightened of the old ones.”

“Each voice carries a portion of value, no matter how unpalatable or distasteful that voice may be: no one person, government, ideology, transnational, or religious institution can own and dominate ...”

“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.”