Certain Quotes

When on board H.M.S. 'Beagle,' as naturalist, I was much struck with certain facts in the distribution of the inhabitants of South America.

We all live in the protection of certain cowardices which we call our principles.

Do the thing you fear most and the death of fear is certain.

The only certain freedom's in departure.

As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.

When death is certain, it is best to sacrifice oneself for a good cause.

When death is so certain, it is better to die for a good cause.