Life stands before me like an eternal spring with new and brilliant clothes.

I protest against the use of infinite magnitude ..., which is never permissible in mathematics.

By explanation the scientist understands nothing except the reduction to the least and simplest basic laws possible, beyond which he cannot go, but must plainly demand them; from them however he deduces the phenomena absolutely completely as necessary.

There have been only three epoch-making mathematicians, Archimedes, Newton, and Eisenstein.

For three days now this angel, almost too heavenly for earth has been my fiancée ... Life stands before me like an eternal spring with new and brilliant colours. Upon his engagement to Johanne Osthof of Brunswick; they married 9 Oct 1805.

Mathematics is concerned only with the enumeration and comparison of relations.

Life stands before me like an eternal spring with new and brilliant clothes.