No mariner ever enters upon a more uncharted sea than does the average human being born in the 20th century. Our ancestors know their way from birth through eternity; we are puzzled about the day after tomorrow.

Whereas each man claims his freedom as a matter of right, the freedom he accords to other men is a matter of toleration.

There comes a time when even the reformer is compelled to face the fairly widespread suspicion of the average man that politics is an exhibition in which there is much ado about nothing.

Almost always tradition is nothing but a record and a machine-made imitation of the habits that our ancestors created.

There is nothing so bad but it can masquerade as moral.

We are told about the world before we see it. We imagine most things before we experience them. And those preconceptions, unless education has made us acutely aware, govern deeply the whole process of perception.

There is no arguing with the pretenders to a divine knowledge and to a divine mission. They are possessed with the sin of pride, they have yielded to the perennial temptation.