Work usually follows will.

Where observation is concerned, chance favors only the prepared mind.

... by chance you will say, but chance only favors the mind which is prepared.

My present and most fixed opinion regarding the nature of alcoholic fermentation is this: The chemical act of fermentation is essentially a phenomenon correlative with a vital act, beginning and ending with the latter. I believe that there is never any alcoholic fermentation without their being simultaneously the organization, development, multiplication of the globules, or the pursued, continued life of globules which are already formed.

Whatever your career may be, do not let yourselves become tainted by a deprecating and barren scepticism.

Chance favours a prepared mind.

Science knows no country because it is the light that iluminates the world