The 19th century was the age of Individualism the 20th and 21st are the ages of Socialism.

The purest expression of the doctrine of Liberalism was probably that of Benjamin Constant

Hatred is not contained in political thinking. Any hatred worked up against the public enemy is non-political, and always shows some weakness in the internal political situation.

Liberalism can only be defined negatively. It is a mere critique, not a living idea

Pessimism only describes an attitude, and not facts, and hence is entirely subjective.

If pessimism is despair, optimism is cowardice and stupidity. Is there any need to choose between them?

The important part of Marxism was its demand for active, constant, practical, class-war