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

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

Wine is the healthiest and most health-giving of drinks.

There does not exist a category of science to which one can give the name applied science. There are sciences and the applications of science, bound together as the fruit of the tree which bears it.

To bring one's self to believe in a truth that has just dawned upon one is the first step towards progress; to persuade others is the second.

In good philosophy, the word cause ought to be reserved to the single Divine impulse that has formed the universe.

My strength lies solely in my tenacity.