Great talents are the most lovely and often the most dangerous fruits on the tree of humanity. They hang upon the most slender twigs that are easily snapped off.

Nobody, as long as he moves about among the chaotic currents of life, is without trouble.

Knowledge rests not upon truth alone, but upon error also.

The word “happiness” would lose its meaning if it were not balanced by sadness.

Every form of addiction is bad, no matter whether the narcotic be alcohol or morphine or idealism.

We cannot change anything unless we accept it. Condemnation does not liberate, it oppresses.

Everything that irritates us about others can lead us to an understanding of ourselves.

The meeting of two personalities is like the contact of two chemical substances: if there is any reaction, both are transformed.