Science says the first word on everything, and the last word on nothing.

Mirrors, those revealers of the truth, are hated; that does not prevent them from being of use.

There are things stronger than the strongest man.

The author creates a book and the people accept or not accept it. The creator of a book is an author and the creator of it`s fate are people.

Superstitions, bigotries, hypocrisies, prejudices, these phantoms, phantoms though they be, cling to life; they have teeth and nails in their shadowy substance, and we must grapple with them individually and make war on them without truce; for it is one of humanity's inevitabilities to be condemned to eternal struggle with phantoms.

Philosophy should be an energy; it should find its aim and its effect in the amelioration of mankind.

There are many tongues to talk, and but few heads to think.