Make Use of Your Friends' Names
The names of your friends with which you are thoroughly familiar will bring to your mind a clear visual impression. You can see the face as soon as the name is mentioned, not of the few but literally of hundreds of people. Learn to take advantage of this great series of Name Pictures, which you can indelibly hitch to the Face Picture of the stranger who chances to bear the same name. Use the same method as before, see the two faces clearly, compare them to make the mind's eye picture of the friend's face definite. Use motion, think, become interested, and every other means to make a strong, lasting impression.