A fertileimagination and applied critical thinking are both required for good science.
Times, Sunday Times (2014)
And so an idea took root in his fertileimagination.
SPICE: The History of a Temptation (2004)
Definition of 'imagination'
imagination
(ɪmædʒɪneɪʃən)Explore 'imagination' in the dictionary
variable noun
Your imagination is the ability that you have to form pictures or ideas in your mind of things that are new and exciting, or things that you have not experienced.
Definition of 'fertile'
fertile
(fɜːʳtaɪl, US -təl)Explore 'fertile' in the dictionary
adjective [usually ADJECTIVE noun]
A fertile mind or imagination is able to produce a lot of good, original ideas.