In the fields of observation chance favors only those minds which are prepared.
... by chance you will say, but chance only favors the mind which is prepared.
Chance favors the prepared mind.
Where observation is concerned, chance favors only the prepared mind.
Chance favors the prepared mind. The more you practice, the luckier you become.
Did you ever observe to whom the accidents happen? Chance favors only the prepared mind.
Life favors those who are prepared
Chance favors the well prepared. The more stuff you throw in, the more chances you have of looking like, 'I did that.'
Chance favors those in motion.
Louis Pasteur said, 'Chance favors the prepared mind.' If you're really engaged in the writing, you'll work yourself out of whatever jam you find yourself in.
Chance favors only those who court her.
In matters of observation chance favors only the prepared mind. (not literal translation) - Dan's les champs de observation le hasard ne favorise que les esprits prepares.