“you can't be value free when it comes to marriage”

“We have to abandon the conceit that isolated personal actions are going to solve this crisis. Our policies have to shift.”

“China has led the world in new tree planting; in fact, over the last several years, China has planted 40 percent as many tress as the rest of the world put together. Since 1981, all citizens of Chi...”

“Heres the solution. We need a CO2 tax, revenue-neutral, to replace taxation on employment, which was invented by Bismarck and some things have changed since the 19th Century.”

“If we don't succeed, we run the risk of failure.”

“Airplane travel is nature's way of making you look like your passport photo.”

“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.”