A body of work such as Pasteur's is inconceivable in our time: no man would be given a chance to create a whole science. Nowadays a path is scarcely opened up when the crowd begins to pour in.
These rules may seem simple enough but it will require great morale and physical courage to adhere to them. But if carried out in the strict sense of the word it will surely lead to a greater success than could otherwise be attained.
