Humanist radicalism … seeks to liberate man from the chains of illusions; it postulates that fundamental changes are necessary, not only in our economic and political structure but also in our values, in our concept of man’s aims, and in our personal conduct.
To have faith means to dare, to think the unthinkable, yet to act within the limits of the realistically possible; it is the paradoxical hope to expect the Messiah every day, yet not to lose heart when he has not come at the appointed hour. This hope is not passive and it is not patient; on the contrary, it is impatient and active, looking for every possibility of action within the realm of real possibilities.

– Erich Fromm from “The Anatomy of Human Destructiveness”

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The situation of mankind today is too serious to permit us to listen to the demagogues — least of all demagogues who are attracted to destruction — or even to the leaders who use only their brains and whose hearts have hardened. Critical and radical thought will only bear fruit when it is blended with the most precious quality man is endowed with — the love of life.

As highlighted by Brain Pickings