My efforts to understand the relationship between samsaric mind and thoughts led me to an image of a calm lake. A stone [a thought] is thrown into the water, causing ripples [samsaric mind]. The mind appears due to the thought, which can start a chain reaction of further thoughts and/or emotions. But as the ripples are a manifestation of the lake, the mind is perhaps a part of something bigger. So ... I think the origin of samsaric mind is more fundamental than thoughts while its existence co-depends on thoughts.