Imagination should give wings to our thoughts but we always need decisive experimental proof, and when the moment comes to draw conclusions and to interpret the gathered observations, imagination must be checked and documented by the factual results of the experiment.
Louis PasteurIn good philosophy, the word cause ought to be reserved to the single Divine impulse that has formed the universe.
Louis PasteurThe controls of life are structured as forms and nuclear arrangements, in a relation with the motions of the universe.
Louis PasteurThere are two men in each one of us: the scientist, he who starts with a clear field and desires to rise to the knowledge of Nature through observations, experimentation and reasoning, and the man of sentiment, the man of belief, the man who mourns his dead children, and who cannot, alas, prove that he will see them again, but who believes that he will, and lives in the hope – the man who will not die like a vibrio, but who feels that the force that is within him cannot die.
Louis Pasteur