Great poetry needs no interpreter other than a responsive heart.

The true task is to unite and organize all workers...and it is the workers themselves who must secure freedom for themselves.

There is a dangerous optimism of ignorance and indifference.

Security is mostly a superstition. It does not exist in nature, nor do the children of men as a whole experience it. Avoiding danger is no safer in the long run than outright exposure. Life is either a daring adventure, or nothing.

One can never consent to creep when one feels an impulse to soar.

The highest thinkers of the ages, the seers of the tribes and the nations, have been optimists.

The clatter of a changing world is not pleasant, and those who have enjoyed the comforts and protection of the old order may be shocked and unhappy when they behold the vigorous young builders of a new world sweeping away their time-honored antiquities.