Then I considered all that my hands had done and the toil I had expended in doing it, and behold, all was vanity and a striving after wind, and there was nothing to be gained under the sun.
Solomon here, in pursuit of the summum bonum - the felicity of man, adjourns out of his study, his library, his elaboratory, his council-chamber, where he had in vain sought for it, into the park and the playhouse, his garden and his summer-house; he exchanges the company of the philosophers and grave senators for that of the wits and gallants, and the beaux-esprits, of his...
Commenting on Ecclesiastes 2:1-11
Then I looked on all the works that my hands had wrought, and on the labour that I had laboured to do,.... He had looked at them, and on them, over and over again, and had taken pleasure therein; but now he sits down and enters into a serious consideration of them, what prodigious expenses he had been at; what care and thought, what toil...
But all these I felt were only "vanity," and of "no profit" as to the chief good. "Wisdom" (worldly common sense, sagacity), which still "remained with me" (Ecc 2:9), showed me that these could not give solid happiness.