Ecclesiastes 2:18-19

MSTC(i) 18 Yea, I was weary of all my labour, which I had taken under the Sun, because I should be fain to leave them unto another man, that cometh after me. 19 For who knoweth, whether he shall be a wise man or a fool? And yet shall he be lord of all my labours, which I with such wisdom have taken under the Sun. Is not this a vain thing?