The most perfidious way of harming a cause consists of defending it deliberately with faulty arguments.

The tragedy is that we cannot believe the dogmas of religion and metaphysics if we have the strict methods of truth in heart and head, but on the other hand, we have become through the development of humanity so tenderly suffering that we need the highest kind of means of salvation and consolation: whence arises the danger that man may bleed to death through the truth that he realises.

It is not in how one soul approaches another but in how it withdraws that I knowr its affinity and solidarity with the other.

Do not be deceived! The busiest people harbor the greatest weariness, their restlessness is weakness--they no longer have the capacity for waiting and idleness.

Existence begins in every instant.

The strongest and most evil spirits have to date advanced mankind the most: they always rekindled the sleeping passions - all orderly arranged society lulls the passions to sleep; they always reawakened the sense of comparison, of contradiction, of delight in the new, the adventurous, the untried; they compelled men to set opinion against opinion, ideal plan against ideal plan.

Mystical explanations are thought to be deep; the truth is that they are not even shallow.