Show me three variations in the leading handbook on the openings, and I will show you two of those three that are defective.

An advantage could consist not only in a single important advantage but also in a multitude of insignificant advantages.

By some ardent enthusiasts Chess has been elevated into a science or an art. It is neither; but its principal characteristic seems to be - what human nature mostly delights in - a fight.

If Steinitz continually took pains to discover combinations, the success or failure of his diligent search could not be explained by him as due to chance. Hence, he concluded that some characteristic, a quality of the given position, must exist that would indicate the success or the failure of the search before it was actually undertaken.

The range of circumstances in which it is possible to presuppose the presence of a combination is very limited. The presence of such circumstances is the reason for the genesis of the idea in the master's brain.

Of 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.

To refer to the oft mooted question, "Which piece is stronger, the Bishop or the Knight?" it is clear that the value of the Bishop undergoes greater changes than that of the Knight.