What we cannot think we cannot think, therefore we also cannot say what we cannot think.

Public opinion is always more tyrannical towards those who obviously fear it than towards those who feel indifferent to it.

Our beliefs are, however, often contrary to fact.

Men who are unhappy, like men who sleep badly, are always proud of the fact.

History is valuable, to begin with, because it is true; and this, though not the whole of its value, is the foundation and condition of all the rest. That all knowledge, as such, is in some degree good, would appear to be at least probable; and the knowledge of every historical fact possesses this element of goodness, even if it posses no other.

Passive acceptance of the teacher's wisdom is easy to most boys and girls. It involves no effort of independent thought, and seems rational because the teacher knows more than his pupils; it is moreover the way to win the favour of the teacher unless he is a very exceptional man. Yet the habit of passive acceptance is a disastrous one in later life. It causes man to seek and to accept a leader, and to accept as a leader whoever is established in that position.

All the conditions of happiness are realized in the life of the man of science.