There Is a Tide in the Affairs of Men...

Brutus

... There is a tide in the affairs of men,
Which, taken at the flood, leads on to fortune;
Omitted, all the voyage of their life
Is bound in shallows and in miseries.
On such a full sea are we now afloat;
And we must take the current when it serves,
Or lose our ventures.

Julius Caesar Act 4, Scene 3
by William Shakespeare

Carry on...