A Gentle Touch    

When warming up or having a light practice, it is best to touch the ball, rather than hitting it, but emphasizing lifting it two or three feet over the net.

Tennis is a vertical game, much more than horizontal.

Gravity is the main force you are fighting.

Further, the ball is only a bit over 2 ounces in weight, while your body and racquet combined are perhaps one thousand times heavier.

Play gently, immersed in feel and control rather than power, and you’ll play a very beautiful game.

Oscar Wegner, TennisTeacher.com