Painting by Marc Chagall
All feelings that gather you up and lift you are pure. If they twist and tear at your being, they are not. All tenderness you may feel for your childhood is good. Every emotion that makes more of you than you have ever been, even in your best hours, is good. Every intensification is good, if it seizes you entire and is not an intoxication or delusion, but a joy you can see into, clear to the bottom. Do you understand what I mean?
Furnborg, Jonsered, Sweden, November 4, 1904
Letters to a Young Poet