Nothing is more inimical to the progress of science than the belief that we know what we do not yet know. - Georg Christoph Lichtenberg

There is no more important rule of conduct in the world than this: attach yourself as much as you can to people who are abler than you and yet not so very different that you cannot understand them.

It is hardly to be believed how spiritual reflections when mixed with a little physics can hold people's attention and give them a livelier idea of God than do the often ill-applied examples of his wrath.

...if we gained only one incontestable truth every ten years from each of our philosophical writers the harvest we reaped would be sufficient.