Found today in a 1998 notebook:

As cultural professionals, you or I should study all the things, regardless of whether they speak to us on a deep personal level. But generally speaking, you only need a couple of paintings, a couple of poems, a couple of pieces of music to last a whole lifetime. I have succeeded if a person walks away with one image, one thought, one realization, one feeling that they can use in their life, even if they can’t remember my name, the names of the pieces, or how many they say. – Bill Viola