Messieurs, c'est les microbes qui auront le dernier mot." (Gentlemen, it is the microbes who will have the last word.)

Chance favors the prepared mind.

Analogy cannot serve as proof.

It is surmounting difficulties that makes heroes.

Fortune favors the well-prepared.

Blessed is he who carries within himself a God, an ideal, and obeys it.

Chance favours the trained mind.