I find these first few stanzas of the Robert W. Service poem “The Men That Don’t Fit In” the most accurate definition of a type of mind drawn to seed-stage venture investing:

There’s a race of men that don’t fit in,
   A race that can’t stay still;
So they break the hearts of kith and kin,
   And they roam the world at will.
They range the field and they rove the flood,
   And they climb the mountain’s crest;
Theirs is the curse of the gypsy blood,
   And they don’t know how to rest.

If they just went straight they might go far;
   They are strong and brave and true;
But they’re always tired of the things that are,
   And they want the strange and new.