Modern applicability of 18th century philosophy

"Be a philosopher, but, amidst all your philosophy, be still a man." - An Enquiry Concerning Human Understanding

After initially delving into the philosophy of  David Hume, one thing seems very clear. He ends most of his paragraphs boldly, such as the quotation above, leaving the reader with some sort of cliff hanger to stay along. But he still writes with the intentions for people to understand, a very important idea, considering he is explaining how we understand anything at all. Yet without the philosophical tools to unwrap all of his ideas much of his bigger points become lost.

While his writing style is explicate and clear for his day and age, one question still remains, is his philosophy too antiquated, misconstrued by the 18th century to still be considered useful in today age for the general public, not just technical philosophers?
Can the complexities of his philosophy can be translated into easy language, without the loss of any meaning?
First things first I will break down his opening ideas into categories that are the building blocks to his philosophy.

What he calls Impressions are more likely today just called feelings. This includes any sensations, passions, or emotions. { to hear,see,feel,love,hate,desire,will..etc}

Ideas, are images of impressions, which the mind uses in thinking and reasoning. He describes them as fainter than impressions. 

*He acknowledges that ideas in some rare cases may become so vivid and intense that they approach impressions. Likewise impressions may grow so faint and diminished that they resemble thoughts. But for the most part, he concludes, that the two are often distinct enough to be considered the two main expected actions of the mind. Thinking and feeling... 

 THEN, he separates these further into the categories: SIMPLE and COMPLEX. 

Simple impressions and simple ideas are so similar that they are essentially indistinguishable. Example. When you see the color red you think of the color red as well.

Whereas complex impressions have parts, such as an apple, which may be broken down into several different parts, the leaf, stem, seeds, core, etc.