You have not succeeded in your experiments, that is all there is to it.

There is a time in every man's life when he looks to his God, when he looks at his life, when he wonders how he will be remembered.

Chance favours a prepared mind.

To know how to wonder and question is the first step of the mind toward discovery.

A bottle of wine contains more philosophy than all the books in the world.

Worship the spirit of criticism. If reduced to itself it is not an awakener of ideas or a stimulant to great things, but, without it, everything is fallible; it always has the last word.

Since the most ancient times, all men, and particularly those who endeavored in the practice of medicine, have brought closer together two natural phenomena of capital importance: illness or fever and fermentation.