Robin Williams' children Zelda, Zak and Cody have issued statements following his death on Monday (August 11).
They describe him as not only a father, but a best friend and one of the "kindest, most generous, gentlest souls" they have known.
25-year-old Zelda said: "My family has always been private about our time spent together. It was our way of keeping one thing that was ours, with a man we shared with an entire world. But now that's gone, and I feel stripped bare.
"My last day with him was his birthday, and I will be forever grateful that my brothers and I got to spend that time alone with him, sharing gifts and laughter. He was always warm, even in his darkest moments.
"While I'll never, ever understand how he could be loved so deeply and not find it in his heart to stay, there's minor comfort in knowing our grief and loss, in some small way, is shared with millions. It doesn't help the pain, but at least it's a burden countless others now know we carry, and so many have offered to help lighten the load. Thank you for that.
"To those he touched who are sending kind words, know that one of his favourite things in the world was to make you all laugh. As for those who are sending negativity, know that some small, giggling part of him is sending a flock of pigeons to your house to poop on your car. Right after you've had it washed. After all, he loved to laugh too…
"Dad was, is and always will be one of the kindest, most generous, gentlest souls I've ever known, and while there are few things I know for certain right now, one of them is that not just my world, but the entire world is forever a little darker, less colourful and less full of laughter in his absence. We'll just have to work twice as hard to fill it back up again."
Zelda and Robin Williams
22-year-old Cody said: "There are no words strong enough to describe the love and respect I have for my father. The world will never be the same without him. I will miss him and take him with me everywhere I go for the rest of my life, and will look forward, forever, to the moment when I get to see him again."
Robin and Cody Williams
31-year-old Zak added: "Yesterday, I lost my father and a best friend and the world got a little greyer. I will carry his heart with me every day. I would ask those that loved him to remember him by being as gentle, kind, and generous as he would be. Seek to bring joy to the world as he sought."
The late actor's second wife Marsha Garces Williams also paid her respects, saying: "My heart is split wide open and scattered over the planet with all of you. Please remember the gentle, loving, generous - and yes, brilliant and funny - man that was Robin Williams. My arms are wrapped around our children as we attempt to grapple with celebrating the man we love, while dealing with this immeasurable loss."