You know what they say: 'variety is the spice of life'. [=life is more interesting and enjoyable when you do different things]
The talks covered a wide/great 'variety of' topics. [=the talks covered many different topics]
I was surprised by the 'variety' of the choices that were available.
(..) Did God paint you? Did God paint me? For certain. Why? Because... ...Allah loves wondrous variety. How has a once arrogant young nobleman... ...found contentment living with the salt of the earth? I've seen knights panic (..)1991 Robin Hood: Prince of Thieves