The painstaking and hard work greatly affects the health of the weak Pascal. Doctors have repeatedly advised to change the way of life, often happen in the world, visit the fashionable salons. However, time for fun sorely lacking - scientific activities absorbed all the forces. In addition, in the capital occurred shortly antiabsolyutistskoe movement declared itself in full voice parliamentary Fronde. In such troubled times Blaise father only dreamed of one thing - to escape with the children from the besieged Paris home. This was made possible in April 1649 after the lifting of the siege, and after more than two years, Etienne Pascal died. No sooner had Blaise recover from this grief, how it happened another event struck him - the younger sister of Jacqueline decided to leave the monastery, which has always opposed the late father.