precautionary principle

The principle that outsiders should be welcomed and provided for was a cross-cultural theme in ancient cultures.

Many so-called "humming tones" are given for practice, but in accepting them observe whether the foregoing principle is obeyed.

The grand thing is to have each of your five fingers go "dum, dum," an equal number of times, which is the principle of all three!

He had hitherto lived for universal man:—his days should terminate on a different principle.

The gauge of railways in Great Britain was not fixed upon any scientific principle.

I have erected above 100 steam-engines on this principle, but never met with one accident or complaint against them.