Everything will pass, and the world will perish but the Ninth Symphony will remain.

All religions are cruel, all founded on blood; for all rest principally on the idea of sacrifice - that is, on the perpetual immolation of humanity to the insatiable vengeance of divinity.

No theory, no ready-made system, no book that has ever been written will save the world. I cleave to no system. I am a true seeker.

As long as we have a master in heaven, we will be slaves on earth.

Intellectual slavery, of whatever nature it may be, will always have as a natural result both political and social slavery.

For ten centuries Christianity, armed with the omnipotence of the Church and State and opposed by no competition, was able to deprave, debase, and falsify the mind of Europe. It had no competitors, because outside the Church there was neither thinkers nor educated persons. It alone taught, it alone spoke and wrote, it alone taught.

Everything that lives, does so under the categorical condition of decisively interfering in the life of someone else.