I should have no use for a paradise in which I should be deprived of the right to prefer hell.

I should have no use for a paradise in which I should be deprived of the right to prefer hell.

Kill one man, and you are a murderer. Kill millions of men, and you are a conqueror. Kill them all, and you are a god.

Whether man is disposed to yield to nature or to oppose her, he cannot do without a correct understanding of her language

A body of work such as Pasteur's is inconceivable in our time: no man would be given a chance to create a whole science. Nowadays a path is scarcely opened up when the crowd begins to pour in.

Science had better not free the minds of men too much, before it has tamed their instincts.

It is sometimes important for science to know how to forget the things she is surest of.