Fame is a sun that lights the dead; living, you will be unhappy with the unhappiness of great minds, and your children will be ruined.
I go before I see your fame, which might have brought me consolation for my lost happiness.

Oh, Balthazar! make my death less bitter to me, let me be certain that my children will not want for bread--Ah, nothing, nothing, not even you, can calm my fears." "I swear," said Claes, "to--" "No, do not swear, that you may not fail of your oath," she said, interrupting him.

"You owed us your protection; we have been without it seven years.

Science is your life.

A great man should have neither wife nor children; he should tread alone the path of sacrifice.