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I know a lot about a few things - mostly useless things.

I've worked on what I think are good things.

You can discover great things through 'mistakes.'

To know anything well involves a profound sensation of ignorance.

My life has been a quest for knowledge and understanding, and I am nowhere near having achieved that. And it doesn't bother me in the least. I will die without having come up with the answers to many things in life.

I try to be well informed. I don't know how well I do all the time, but I try nonetheless.

I'm sure that I don't know everything I want to know. I have so much more to learn.

I've had a lot of success; I've had failures, so I learn from the failure.