Van Gogh learned about Fernand Cormon's atelier from Theo. He worked at the studio in April and May 1886, where he frequented the circle of the Australian artist John Peter Russell, who painted his portrait in 1886. Van Gogh also met fellow students Émile Bernard, Louis Anquetin and Henri de Toulouse-Lautrec – who painted a portrait of him in pastel. They met at Julien "Père" Tanguy's paint shop, (which was, at that time, the only place where Paul Cézanne's paintings were displayed). In 1886, two large exhibitions were staged there, showing Pointillism and Neo-impressionism for the first time, and bringing attention to Georges Seurat and Paul Signac. Theo kept a stock of Impressionist paintings in his gallery on boulevard Montmartre, but Van Gogh was slow to acknowledge the new developments in art.
What particularly struck me when I saw the old Dutch paintings again is that they were usually painted quickly. That these great masters like Hals, Rembrandt, Ruisdael – so many others – as far as possible just put it straight down – and didn't come back to it so very much. And – this, too, please – that if it worked, they left it alone. Above all I admired hands by Rembrandt and Hals – hands that lived, but were not finished in the sense that people want to enforce nowadays ... In the winter I'm going to explore various things regarding manner that I noticed in the old paintings. I saw a great deal that I needed. But this above all things – what they call – dashing off – you see that's what the old Dutch painters did famously. That – dashing off – with a few brushstrokes, they won't hear of it now – but how true the results are.
There have been numerous debates as to the nature of Van Gogh's illness and its effect on his work, and many retrospective diagnoses have been proposed. The consensus is that Van Gogh had an episodic condition with periods of normal functioning. Perry was the first to suggest bipolar disorder in 1947, and this has been supported by the psychiatrists Hemphill and Blumer. Biochemist Wilfred Arnold has countered that the symptoms are more consistent with acute intermittent porphyria, noting that the popular link between bipolar disorder and creativity might be spurious. Temporal lobe epilepsy with bouts of depression has also been suggested. Whatever the diagnosis, his condition was likely worsened by malnutrition, overwork, insomnia and alcohol.
On January 27, 2013, at the age of 87, Van Dyke received the 2013 Screen Actors Guild Life Achievement Award. During his acceptance speech, Van Dyke reminisced about his work over the years as an entertainer and stated that his career has "been full of surprises and a lot of fun." He also praised actors working in the industry today, calling them "the greatest generation of actors" and telling them, "You've all lifted the art to another place now." He continued with a rhetorical question for his Hollywood colleagues: "Aren't we lucky to have found a line of work that doesn't require growing up? I love that." Van Dyke is the 49th recipient of the SAG Life Achievement Award, following 2012 honoree Mary Tyler Moore.