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.

The whole speculation about morality is an effort to find a way of living which men who live it will instinctively feel is good.

Unless the reformer can invent something which substitutes attractive virtues for attractive vices, he will fail.

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.

Only the consciousness of a purpose that is mightier than any man and worthy of all men can fortify and inspirit and compose the souls of men.

The study of error is not only in the highest degree prophylactic, but it serves as a stimulating introduction to the study of truth.

I demand from you in the name of your principles the rights which I shall deny to you later in the name of my principles.