The very definition of "emergency" is that it is unexpected, therefore it is not going to happen the way you are planning.

Education is the path from cocky ignorance to miserable uncertainty.

As for moral courage, it is very rare, he said, to find that kind found at 2 o'clock in the morning; that is to say, courage in the face of the unexpected.

Never, never, never believe any war will be smooth and easy, or that anyone who embarks on the strange voyage can measure the tides and hurricanes he will encounter. The statesman who yields to war fever must realize that once the signal is given, he is no longer the master of policy but the slave of unforeseeable and uncontrollable events.

The future is unknowable, but the past should give us hope.

How little can we foresee the consequences either of wise or unwise action, of virtue or of malice. Without this measureless and perpetual uncertainty, the drama of human life would be destroyed.