Which statements are better-phrased?

[tamguatlay]

1. As you grow older, you will discover that you have two hands, one to help yourself, the other to help others.

2. As you grow older, you will discover that you have two hands, one to help yourself, one to help others.

3. As you grow older, you will discover that you have two hands, one for helping yourself, one for helping others.

4. As you grow older, you will discover that you have two hands, one for helping yourself, the other for helping others.

Which statements are better-phrases?

Thanks!

[Alan]

All are fine.