The laws of chess do not permit a free choice: you have to move whether you like it or not.
Emanuel LaskerEducation in Chess has to be an education in independent thinking and judging. Chess must not be memorized.
Emanuel LaskerOf my fifty-seven years I have applied at least thirty to forgetting most of what I have learned or read. Since then, I have acquired a certain ease and cheer which I should never again like to be without. (...) I have stored little in my memory, but I can apply that little, and it is of use in many and varied emergencies. I keep it in order, but resist every attempt to increase its dead weight.
Emanuel Lasker