Opposites are not contradictory but complementary.
If we couldn't laugh at ourselves, that would be the end of everything.
Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.
The opposite of a fact is falsehood, but the opposite of one profound truth may very well be another profound truth.
If an idea does not appear bizarre, there is no hope for it.
One must always do what one really cannot.