False facts are highly injurious to the progress of science, for they often endure long but false views, if supported by some evidence, do little harm, for everyone takes a salutory pleasure in proving their falseness.
Fashion is the science of appearances, and it inspires one with the desire to seem rather than to be.
Natural science will in time incorporate into itself the science of man, just as the science of man will incorporate into itself natural science: there will be one science.
Nature is itself a great science; it already exists. One needs the tools for that, to see how it is possible.
Perfect as the wing of a bird may be, it will never enable the bird to fly if unsupported by the air. Facts are the air of science. Without them a man of science can never rise.