Chemistry has been termed by the physicist as the messy part of physics, but that is no reason why the physicists should be permitted to make a mess of chemistry when they invade it.

The pure air and dazzling snow belong to things beyond the reach of all personal feeling, almost beyond the reach of life. Yet such things are a part of our life, neither the least noble nor the most terrible.

Scientific men can hardly escape the charge of ignorance with regard to the precise effect of the impact of modern science upon the mode of living of the people and upon their civilisation.

But what sin is to the moralist and crime to the jurist so to the scientific man is ignorance.

On our plane knowledge and ignorance are the immemorial adversaries.