If you can’t appreciate what you’ve got, you’d better get what you can appreciate.

Science can never solve one problem without raising ten more problems.

A day's work is a day's work, neither more nor less, and the man or woman who does it needs a day's sustenance, a night's repose and due leisure, whether they be painter or ploughman.

All problems are finally scientific problems.

Consistency is the enemy of enterprise, just as symmetry is the enemy of art.

It is doubtless wise, when a reform is introduced, to try to persuade the British public that it is not a reform at all; but appearances must be kept up to some extent at least.

The notion that the colonel need be a better man than the private is as confused as the notion that the keystone need be stronger than the coping stone.