To live is good. To be able to cope with the duties of the day is pleasant to any normal person. The sun is used figuratively of God’s protecting care in Ps. 84:11 and Mal. 4:2.
Light is sweet.
Only in the light is it possible to appreciate the beauties of the natural world, to work effectively, or to travel safely. By following the advice given in v. 6 one may realize a fuller and more satisfying experience in life.