Like many people engaged in seeking, I had this book on my shelf alongside a few other 'pointers' but didn't delve into it until after reading Tolle's The Power of Now.
Reading the experience of those who's search has come to an end on sites like nondualitymgazine.org, I noticed Krishnamurti was mentioned sometimes, so I went back to my neglected copy.
I find Krishnamurti has a more gentle way of nudging you to enquire within, he has a ceaseless knack of getting you to face the Truth and strip away the conditioning surrounding every thought, opinion and ideal held dear to modern society. Unlike Tolle, he doesn't offer any explanations for this or that, rather points always towards you discovering for yourself why it is this way or that. Although the talks the book is based upon, range from the 1950s through to early 1980s, what he has to say is timeless and eternally relevant.
On Love and Loneliness is presented as a series of talks largely based on these themes, which are delivered sometimes as answers to an opening question, such as what to do when one feels lonely, or how to overcome it, Krishnamurti himself poses the more important questions like What is love ? and why is pleasure given such prominence in our lives? but do not expect plain, straightfoward answers because these are not the plain, straightforward questions they pretend to be.
Krishnamurti shows you that the answers to these questions rely on things much deeper within us, and on dismantling the constructs we have held in place so diligently throughout civilisation, and which are there to hold up our own inventions, conventions and ultimately the contradictions we struggle with daily. Ultimately, the answers lie within. Krishnamurti will keep poking at the thought until you stop expecting to be given the answers and do the work yourself.
It's interesting to see how the personality of each 'guru' remains largely intact even though they are beyond mind, and some will find one pointer more relevant than another. Nisargadatta is considered crouchy and mean by some, I find Tolle rather direct and uncompromising, others have found Krishnamurti to be sour and negative. All of these are merely our own projections, or reflections of our own personalities. What counts is the message, obviously, and the way Krishnamurti gently persuades you to open your own Pandora's box is quite different to either of these two masters who came to be enlightened later in life.