E. In a multitude of counselors there is safety.
A. If the stomach is not strong, do not eat cockroaches.
E. Milk for babes.
A. No one should draw water from the spring in order to supply the river.
E. Robbing Peter to pay Paul.
A. The elephant makes a dust and the buffalo makes a dust, but the dust of the buffalo is lost in the dust of the elephant.
E. Duo cum faciunt idem non est idem.
A. Ear, hear the other before you decide.
E. Audi alteram partem.
On the side of number we have another test of the power of abstraction; and while the lower races show lack of practice in this, they show no lack of power. It is true that tribes have been found with no names for numbers beyond two, three, or five; but these are isolated groups, like the Veddahs and Bushmen, who have no trade or commerce, and lead a miserable existence, with little or nothing to count. The directions of attention and the simplicity or complexity of mental processes depend on the character of the external situation which the mind has to manipulate. If the activities are simple, the mind is simple, and if the activities were nil, the mind would be nil. The mind is nothing but a means of manipulating the outside world. Number, time, and space conceptions and systems become more complex and accurate, not as the human mind grows in capacity, but as activities become more varied and call for more extended and accurate systems of notation and measurement. Trade and commerce, machinery and manufacture, and all the processes of civilization involve specialization in the apprehension of series as such. Under these conditions the number technique becomes elaborate and requires time and instruction for its mastery. The advance which mathematics has made within a brief historical time is strikingly illustrated by the words with which the celebrated mathematician, Sir Henry Savile, who died in 1662, closed his career as a professor at Oxford: