All extremes are bad. All that is good and useful, if carried to extremes, may become-and beyond a certain limit is bound to become-bad and injurious.

Face the truth squarely. In politics that is always the best and the only correct attitude.

Attention, must be devoted principally to raising the workers to the level of revolutionaries; it is not our task to descend to the level of the 'working masses'.

In the last analysis, productivity of labour is the most important, the principal thing for the victory of the new social system.

To rely upon conviction, devotion, and other excellent spiritual qualities; that is not to be taken seriously in politics.

Only by abolishing private property in land and building cheap and hygienic dwellings can the housing problem be solved.

The most important thing when ill is to never lose heart.