Aim at high things (6)
I believe the answer is:
aspire
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">aim at high things</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for aspire that I've seen before include "Have ambitions (to achieve something)" , "I spare (anag.)" , "Yearn, dream (towards)" , "Aim, shoot for" , "Have an ambitious plan or a lofty goal" .)