There is only one way to put an end to evil, and that is to do good for evil.

The struggle with evil by means of violence is the same as an attempt to stop a cloud, in order that there may be no rain.

The only good is knowledge and the only evil is ignorance.

The potentiality of perfection outweighs actual contradictions... Existence in itself is here to prove that it cannot be an evil.

To abolish war it is necessary to abolish patriotism, and to abolish patriotism it is necessary first to understand that it is an evil. Tell people that patriotism is bad and most will reply, 'Yes, bad patriotism is bad, but mine is good patriotism.'

I confess myself as belonging to that class in the country who contemplate slavery as a moral, social and political evil