"Religious suffering is at once the expression of real suffering and a protest against real suffering. Religion is the sigh of the oppressed creature, the sentiment of the heartless world, as it is the soul of soulless condition. It is the opium of the people."

"It is characteristic of science that the full explanations are often seized in their essence by the percipient scientist long in advance of any possible proof."

"The human mind evolved always in the company of the human body, and of the animal body before it was human. The intricate connections of mind and body must exceed our imagination, as from our point of view we are peculiarly prevented from observing them."

"The recognition of the art that informs all pure science need not mean the abandonment for it of all present art, rather it will mean the completion of the transformation of art that has already begun."

"The violent reaction on the recent development of modern physics can only be understood when one realises that here the foundations of physics have started moving and that this motion has caused the feeling that the ground would be cut from science."

"Science gives us a powerful vocabulary, and it is impossible to produce a vocabulary with which one can only say nice things."

"It is also a good rule not to put overmuch confidence in the observational results that are put forward until they are confirmed by theory."

"Climate change is real. Climate change is being substantially increased by humans and the carbon we put into the atmosphere. And it appears to be speeding up. If science has made any mistakes, science has been underestimating it."