If one does not know to which ...

If one does not know to which port one is sailing, no wind is favorable.
If one does not know to which port one is sailing, no wind is favorable.

More phrases

What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.
We are masters of the unsaid words, but slaves of those we let slip out.
I have always found that mercy bears richer fruits than strict justice.
A lie gets halfway around the world before the truth has a chance to get its pants on.
You can fool all the people some of the time, and some of the people all the time, but you cannot fool all the people all the time.

Quotes from the same author

One of the most beautiful qualities of true friendship is to understand and to be understood.
Luck is what happens when preparation meets opportunity.
The conditions of conquest are always easy. We have but to toil awhile, endure awhile, believe always, and never turn back.
Begin at once to live and count each separate day as a separate life.
The mind unlearns with difficulty what it has long learned.