The ones who just save would never have a lot of money, and the ones who have a lot of money are the ones who invest, so basically someone should invest and then he should save money from the profits he earns from those investments, that is the right way of doing it.
It's better to save money, in my point of view having a permanent job and at the same time earning a money from your salary is a big chance to save. Most of working people only enjoy money and spend it in a daily live no one is saving. But, how can you invest if you have no capital for investment? point is that you can use your salary being saved for investment, how about your overtime pays and other allowances of your salary which you can save it and in years you will be surprised it reached a big amount of money which you can invest in a small business. Conclusion is both saving and investing is better it depends on you which of them you choose first.