Blaise Pascal Quote

We do not rest satisfied with the present.... So imprudent we are that we wander in the times which are not ours and do not thinkof the only one which belongs to us; and so idle are we that we dream of those times which are no more and thoughtlessly overlook that which alone exists. For the present is generally painful to us.

THE PROVINCIAL LETTERS PENSEES SCIENTIFIC TREATISES (ed. 1952)