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Instruction does not prevent wasted time or mistakes; and mistakes themselves are often the best teachers of all.

Mistakes are the best teachers. One does not learn from success. It is desirable to learn vicariously from other people's failures, but it gets much more firmly seared in when they are your own.

It's okay to make mistakes. Mistakes are our teachers - they help us to learn.

I've learned that mistakes can often be as good a teacher as success.

I've come to realise that the best teachers never stop being teachers.

I wasn't a very good teacher.

There are many teachers who could ruin you. Before you know it you could be a pale copy of this teacher or that teacher. You have to evolve on your own.

In the practice of tolerance, one's enemy is the best teacher.

The best teachers that I had were always the ones I never wanted to disappoint.