Well what path did you take to learn all this? How did Bernhard become Bernhard?
The path of a lifetime of study.

I know you're going to say, "a lifetime of study," but can you be more specific?
Darn!

Am I that predictable?
I had parents, I had teachers, I had friends I tried to emulate, I read books, I went to schools and universities, I watched TV, videos and DVDs, I listened to CDs, I surfed the net, I travelled widely, I made a point of always applying knowledge to practical situations (if something stupid works, it is not stupid), I observed, I listened, I tried it out. I taught (nothing teaches you more than teaching). The usual stuff.
How long did you study piano and what level did you get to?
I started at six. Therefore I was doomed to not amount to too much (I missed the 2 – 4 year old window

). But the first 15 years were mostly wasted doing useless stuff that got me nowhere fast. So I guess I am a false starter, then a late starter.
What would you attribute your knowledge to -- a single book, or many, like "I got a solid base for counterpoint from this book...."
The single most important source and contribution to my knowledge is…Pianoforum!

There is no single source. The whole universe.
How would you describe yourself as a pianist?
Exceedingly handsome. Dashing. Irresistible.

(hey, you asked my opinion, right?)
Actually I would not describe myself as a pianist, but as a piano teacher.
I think traditionally most are more performance, but there are some that compose or do mostly accompanying.
I don’t perform (except informally for friends and family, and I don’t really perform, I play for them).
I feel no urge to compose.
I do accompany occasionally my recorder students in music festivals and exams.
How did you plan things out to get this knowledge and wisedom?
I didn’t. I just paid attention and tried to learn from my mistakes (you can conclude that I have made them in greater number than most

).
If you weren't going to music school, how did you go about learning music while doing other things, like working? Where did you get the time to do serious study of all the many topics in music?
Working? :oI have tried all my life not to work (and have succeed admirably). I have never held a job in my whole life (except for a brief period). I just organised my life so that people would pay me to pursue my interests.

Here is a story about time, you might have heard.
A physics professor arrived at his lesson one day carrying a large cylindrical glass bowl and three cloth bags. This immediately arouse the curiosity of the students.
The professor then announced to the class:
“Today we will be examining space and time.”
He put the cylindrical bowl on his desk, and proceeded to fill it with large rocks from one of the cloth bags. When it was filled to the brim, he turned to the class and asked:
“Is the bowl totally full?”
The class agreed that the bowl had been filled to the brim.
The professor then reached for the second cloth back and emptied its contents on the rock-full bowl. It was gravel, which slipped through the spaces in between the rocks and filled it all.
“Is the bowl full now?” He again enquired from the class. Most agreed it was, although a few were not so sure anymore, after all there was still a cloth bag the professor had not used. And right they were, for the professor reached for the third cloth bag, which was full of sand and emptied into the bowl. And again, the dry sand easily slipped in between the rocks and gravel to fill every available space.
“What about now?”
This time – and considering that there were no more bags left, the whole class unanimously agreed the bowl must be full.
The professor then, reached for his briefcase and produced six bottles of beer, which (to some of the students horror) he proceeded to empty on the glass bowl. And of course the beer easily accommodated itself in the spaces amongst the rocks, the gravel, and the sand.
The professor then turned to the class and concluded:
“As you can see, no matter how full your life might be, there is always space for some beer.”
“Ah! Yes, one more thing. Our time in this life is limited, as is the space in this bowl. So make sure you put the rocks first.”
I have four big rocks in my life, and music is one of them.

What's a typical day like for you?
A typical day? That was a long, long time ago.

Finally consider this thought:
By taking piano lessons for the first time we are registering within ourselves a desire to make progress. We must always take responsibility for that progress, for that which we seek lies not in the music school. Nor can it be found in Vienna or Julliard. Your teachers do not own it, nor can they give it to you. You cannot buy it or take it from someone else. What we are searching for when we sit at the piano in the heat of the summer or the frost of the winter is within us all the time. What is missing for most is the ability to appreciate it.Best wishes,
Bernhard.