We summon all our knowledge of the past and we scan all signs of the future.
If I could summon any one of the three to my aid and comfort I would.
Rising, he called one of the servants, and bade her summon Margaret.
Abruptly the man turned in his chair to summon a waiter, and exposed his profile.
"I will summon her," said the Lady Abbess, and sank into the ground.