All I have to say is, Love one another - that is the height of all philosophy. It is beyond all religions. It is the secret of joy - the fountain of Perpetual Youth - the only rainbow on life's dark cloud.

If abuses are destroyed, man must destroy them. If slaves are freed, man must free them. If new truths are discovered, man must discover them. If the naked are clothed; if the hungry are fed; if justice is done; if labor is rewarded; if superstition is driven from the mind; if the defenseless are protected, and if the right finally triumphs, all must be the work of man. The grand victories of the future must be won by man, and by man alone.

Martyrdom, as a rule, establishes the sincerity of the martyr, never the correctness of his thought. Things are true or false in themselves.

Good nature is the cheapest commodity in the world.

Shakespeare was an intellectual ocean, whose waves touched all the shores of thought; within which were all the tides and waves of destiny and will; over which swept all the storms of fate, ambition and revenge; upon which fell the gloom and darkness of despair and death and all the sunlight of content and love, and within which was the inverted sky lit with the eternal stars -- an intellectual ocean -- toward which all rivers ran, and from which now the isles and continents of thought receive their dew and rain.

Shakespeare has done far more for the world than the Bible.

Darwin has done more to change human thought than all the priests who have existed.