In order to help another effectively, I must understand what he understands. If I do not know that, my greater understanding will be of no help to him... instruction begins when you put yourself in his place so that you may understand what he understands and in the way he understands it.

People understand me so poorly that they don't even understand my complaint about them not understanding me.

If a man wants to set up as an innkeeper and he does not succeed, it is not comic. If, on the contrary, a girl asks to be allowed to set up as a prostitute and she fails, as sometimes happens, it is comic.

Take away paradox from the thinker and you have a professor.

To venture causes anxiety. Not to venture is to lose oneself.

And if something should be found, particularly in the first part of the dissertation, that one is generally not accustomed to come across in scholarly writings, the reader must forgive my jocundity, just as I, in order to lighten the burden, sometimes sing at my work.

It seems essential, in relationships and all tasks, that we concentrate only on what is most significant and important.