let's see how good my memory is from reading this book first in 1967
Page 150-151 Sandy Koufax speaking (or writing)
"I talk of Aaron so often because he is the toughest hitter in the league as far as I am concerned. With Aaron, it doesn't matter whether you throw the fastball or the curve because he has the ability to wait longer than almost any other hitter and having waited, he has the quickness with the bat. You can pitch to Willie Mays. If you make your pitch you've got a chance of getting Willie out. If you make a mistake, you've got a good chance of losing a baseball or a baseball game - and in the course of a ball game you're going to make mistakes.
The whole idea with Mays is to hope you make the mistake where it won't hurt you. The idea with Aaron is to hope his line drives are hit to a fielder."