Agnostic Quote by Ashley Montagu

The scientist believes in proof without certainty, the bigot in certainty without proof.

— Ashley Montagu

Science has proof without any certainty. Creationists have certainty without any proof.

— Ashley Montagu

That which is provable, ought not to be believed in science without proof.

— Richard Dedekind

“No scientific theory can claim absolutely certainty.”

— David Christian

A scientist is never certain. ... We absolutely must leave room for doubt or there is no progress and there is no learning.

— Richard P. Feynman

In the absence of evidence, the scientist says, 'I don't know,' but the religionist says, 'I believe.'

— David Eller

The belief in a certain idea gives to the researcher the support for his work. Without this belief he would be lost in a…

— Konrad Zuse

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

— John Desmond Bernal

The very foundation of science is to keep the door open to doubt. Precisely because we keep questioning everything, especially our own premises, we…

— Carlo Rovelli

It is scientific only to say what is more likely and what less likely, and not to be proving all the time the possible…

— Richard P. Feynman

In science, nothing is ever 100% proven.

— Michio Kaku

“I'm a scientist and I know what constitutes proof. But the reason I call myself by my childhood name is to remind myself that…

— Douglas Adams